Thanks for the thread, Catiette
I don't think anyone can reasonably argue that the term ultras is not derogatory or is not being used in a derogatory way - he uses it as a shorthand for some GC feminists he regards illiberal or authoritarian.
My short response is that this analysis is a long-winded way of saying “Why do you care?”; “How does it affect harm/you?”; “Just go about your day”; “It costs nothing to be polite”, etc.
As has been pointed out, the writer is neither a woman nor a feminist.
It's been said upthread, and I agree, that there isn't really a difference in the GC-ness of the views - JT doesn't think men are, or can turn into, women - it's more about strategy. How helpful/unhelpful is it to use preferred pronouns when you don't have to?
Wrt children, it's medical ethics. Dr Cass believes in GI and the possibility of gender incongruence, but if you don't believe in GI, it's wrong (and pointless) to continue to give any children harmful drugs to treat gender incongruence.
As a rule, I think it’s wiser to support policies or philosophical positions than the people who espouse or subscribe to them. Otherwise you can find yourself attempting to defend the indefensible or justify positions you don’t believe in purely out of loyalty or tribalism.
Regarding how people dress, TempestTost said it all on page 1.
Any man who wants to wear a skirt or dress to work has plenty of options. Kilts, tunics, sarongs, kimonos etc. Wearing women's clothing is almost always a sexual thing that involves women and that's why it shouldn't be allowed at work and should be socially discouraged. And for those men who claim it is not a sexual thing, what’s wrong with a kilt? Why is it essential for you to wear a skirt that doesn’t fit you properly instead? Why is it so important that it is a “women’s” skirt or "women's" blouse? There are men’s shirts with bows and ruffles, jackets in bright colours and bold patterns. Sensual fabrics are available. Fill your boots, lads.
As for claiming a trans identity, as far as I am aware, you can claim to be a woman, feel like a woman etc without wearing women’s clothing. The clothing is an announcement, not proof.
We will always need some gendered clothing because women and men are not the same shape and size. We saw in the Olympics the differences between young, fit men and women who play the same sport. If a woman has a medium or big bust, her blouse for work will need darts for it to look smart. (Looking smart may not matter for her work, of course.) Women in some jobs complain about unisex clothing actually being men's clothing - the legs and arms of overalls are too long, stab vests don’t accommodate any sort of bust, etc. We can all wear trousers, skirts, blouses/shirts, T-shirts, jumpsuits, jackets, wellies etc, etc, but there will be male and female versions. Anoraks, rain jackets...not so much.
Dress as you please always has the implicit caveat “within reason”.
We can’t and don't want to control other people’s private sexual thoughts and fantasies. What we should resist is when they bring them into the public sphere and effectively force women to take part. “Taking part” is just being a woman and showing any reaction at all in his presence. If a man wears women's underwear, which no one can see, he can. He can get all the thrill he wants because it doesn’t affect his female colleagues or the women on the bus.
But wearing women’s (outer) clothing is a public display of fetish. It doesn’t even have to be overtly sexualised clothing, either. I would argue that a man dressed in a beige M&S women’s skirt and fair isle cardigan is indulging himself in exactly the same way as the men who dress as hot young women in red leather miniskirts. It's the “woman” bit which is the fantasy and gives the thrill.
Women mostly wear women's versions of what used to be men’s clothing - trousers or jackets, trouser suits. When women wear actual men's clothes, it's for comfort and practicality and because they are more hard-wearing. Not as a fetish.
I'm not claiming that combating this is practicable or simple. I'm just expressing some of the reasons why I don't think it's a trivial matter when a man wears women's clothing - I think it does affect women.