They have one notorious writer, Graham Linehan, who's pretty cruel and mean-spirited about his opinions in this regard. I agree that "hostile" is often a false accusation in this context, and I get why they don't want to be seen as bowing to the mob on this (since many other Substack writers have much less justifiably been tarred as transphobic), but it really would make the issue a lot more clear-cut if they could find a way to get him to knock it off.