(TRAs is a TERF term for transgender activists.)
It's a very common tactic for TRAs to claim that they aren't doing/saying the thing that they are doing/saying before everyone's very eyes.
I have seen internet debates where they will say something outrageous and then in the next breath claim that they never said the thing that they said five seconds ago, and the person who called them out on it is just a crazy fantasist. It's the same tactic that all gaslighters and emotional abusers use.
Expecting a good faith debate or even a consistent position from them is foolhardy. We are dealing with a political movement that is based on male dominance and extreme narcissism - of course they are going to use the tactics of narcissists and abusers when advancing their political agenda.