Haven't read the article, but just what you mention here, is next to meaningless. Were the GC materials calling for violence? Because if not, there probably isn't much of a link. Or not a link that we would have to worry about.
Not a link you have to worry about perhaps.
(replying more generally now)
I think the point is that Glinner, Posie etc are actively courting those on the right/far right, and using increasingly volatile tactics to do so - including in Glinner's case outing people on Queer dating apps. Should this result in violence - and in the aforementioned arson case inmay have played a part - then I'm afraid their hands will not be clean.
And they are not the only ones. GC people appearing on Sonia Poulton's conspiracy nonsense is virtually unprecedented on the UK left. No movement has gone near those groups before because they are riddled with everyone from the far right to actual ideological neo-nazis. Who even watches that crap except conspiracy theorists and the far right? Why the need to reach out to them and promote GC ideas within that movement? What are the possible consequences of that?
We are already seeing tactics used by gender critical groups which mirror those used by the extreme religious right in the US - maps of health care providers being distributed, clinicians harrassed, demos featuring graphic intimate pictures of surgery (without the consent of those in the pictures). There is also a growing allegiance in the US between groups like Wolf, who have received evangelical funding, and extremist religious groups - and UK gender critical people have been involved in that. And it is true that America is a different place, but equally it's not just one place, trans rights are considerably advanced in some states compared to the UK.
Much of GC rhetoric is increasingly indistinguishable from that of the hard right. The constant gender critical diatribes about the woke, and snowflakes, and antifa which oftens extends into criticism of groups like Black Lives Matters, would often not be out of place on alt right and far right websites. People like Harry Miller have appeared at far right events. Anne Marie Waters has been photographed wearing one of Posie's t-shirts and reportedly attended the Inventing the Transgender Child conference - a conference incidentally largely funded by Julie Burchill who has been a major player in the growth of the UK GC movement no matter how much some people want to airbrush her out of the picture now she is no longer convenient.
There is an undeniable and growing convergence between some gender critical activists and some on the far right and it is happening in both directions. And it's understandable that a narrative that claims the greatest threat women face is not poverty, inequality, racism, or the resurgence of anti-feminist conservative ideals, but trans people has attracted those from the extreme right. That's straight from their playbook who when not wearing their gender critical hats will claim the greatest threat to the working class is not austerity, or declining living standards, or public service cuts or mass unemployment but Muslims, or refugees, or whoever the latest bogeyman is that is coming to destroy everything about our way of life.
This does not mean that all those who are gender critical are far right, or even just right wing, or even that the gender critical movement is a right wing movement - although it is very much tipping in that direction compared to how it started out. And it's equally true that some like Julie Bindel and WPUK have tried to prevent this, although I would contend they haven't tried particularly hard - and there seems to be little concern about actual hatred being fostered against trans people and more concern that gender critical links with the right makes the movement look bad. WPUK spoke out about Posie's racism but never her transphobia.
I genuinely fear what might happen in the US now, as disgruntled and potentially violent MAGA types go scouring for new targets and seem to be settling on trans people. And those sentiments seem to be growing here too - gender critical thought is becoming an entrypoint for alt-right ideas as the thread defending Andy Ngo on here demonstrates. Meanwhile in the UK we've seen some GC activists cosying up to the worst of the Tory Party and supporting policies such as the (currently being revised) RSE guidelines which are actually far more concerning for anti-racist and left wing groups than they are trans people. There are clearly some who have decided that LGB people or people of colour or the poor may have to take a few hits in the name of preventing further trans inclusion. Opposition to Biden's equality act, which would enshrine LGB equality in US law is a good example of that. It appears to have been decided on LGB people's behalf that this act should be sacrificed in the name of curtailing trans rights no matter what LGB people might think. Those who have said they will now vote Tory specifically because they are perceived as the most trans hostile party without a care for what else they might do is another example.
So I worry about where things are heading here too. I've said before I think some people have lost ther moral compass on this issue, and whilst they may currently only be a (not insignificant) minority in gender critical circles, more moderate voices are doing little to address it. My hope is that as the GC movement becomes more extreme it will be pushed ever further to the fringes and ultimately these links will sow the seeds of its demise. Because the alternative, which is the growth of the far right in the UK on the back of anti-trans sentiment, is pretty terrifying to contemplate