I haven't seen it but I don't see that Posie had the power to shift the focus of the interview.
She'd have had to state that IW's gender identity is of interest to IW, but she (Posie) was here to discuss the erosion of free speech, the right to state biological facts, and the erasure of womanhood.
It's very plausible, given what Holmes said later, that the interviewers wouldn't have allowed her to do that and painted her as avoiding the question.
It's bizarre - Joanne Gosling filled in for the TRA empty chairs on the Victoria Derbyshire show yesterday by being their voice and now This Morning seems to have taken a very partial attitude.
In the words of Dr Jane Clare Jones:
For those of you out there still sitting on the fence, or who still believe that I, and everyone opposing this ‘civil rights movement’, is just a nasty evil hate-mongering bigot, please, if you give one shit about women and the protection of women, wake-the-fuck-up. This is actually happening, it’s scary as shit, and we may well be running out of time. This is what woman-hating totalitarianism looks like. This is not a fucking drill.