The only argument they have for "third spaces" being transpho ic is because they think "we" (the nasty hive mind of evil terfs) mean a third space specifically only for people who are trans and that means trans people will have to "out" themselves by using them (because we can't tell by looking at them, oh no!). They don't think it through and realise everyone and anyone can use the gender neutral space, your mum, grandad, anyone, and trans people.
It's so tiring.
They campaign for gender neutral, then accuse us of transphobia for suggesting gender neutral options.