I sometime wonder if I'm a hypocrite because I have my own red lines - but not the trans one.
My lines don't make me unfriend people and I'd certainly never publicly shame anyone ever (how rude!) but it does affect how I see them. I have racist relatives, old schoolmates, and acquaintances, but I wouldn't pursue a friendship with a racist going forward.
My red lines are on homophobia, racism, anti-semitism and islamophobia, victim-blaming in and apologism for - child abuse, rape and domestic violence cases. I will always discuss these issues despite 1. believing there is a wrong and a right end of the opinion spectrum to be on, 2. thinking people are entrenched and it's a waste of time, and 3. it usually descending into straw men tropes and whataboutery.
However, I believe there are trans-related issues to be discussed, things are not cut and dried, and bellowing "trans women are women" at me doesn't cover it.
I'm a questioner. I can't do orthodoxy. It feels Orwellian to be told no discussion is allowed, just accept the slogan. I can't abide any kind of bullying silencing hanging up behaviour. Trans campaigners on social media remind me of Brexit campaigners with the name calling, slogans in place of debate, and clear desire to silence dissenting voices.
And I don't feel transphobic. I don't have any anti-feelings. I just can't accept having a new reality imposed upon me that doesn't make sense, endangers children and seems unfair in the context of what it takes from natal women and female children.
Is this how racists feel in the context of their own belief system?
I would characterise my opinion as being on the side of both natal women and trans women - except on the battleground issues. (Loos, changing rooms, sport etc)
Sorry OP, I appear to have "gone off on one."