In my opinion the article is confusing and disingenuous:
The success of two new books suggests that we are witnessing the progression of a new respectability cascade in relation to “gender-critical” beliefs – a branch of feminism (often described as “trans exclusionary radical feminism” or “Terf” by some critics) that is sceptical of gender stereotypes and rejects the idea that the biological categories of male and female are socially constructed
It's framing GC views as having been unusual, rather than totally mainstream but widely suppressed by fear and threats. Ask 100 people on your high street whether men should be competing in women's sports or entering women's changing rooms and you'll find that most are GC. It's wrong to say that GC views are newly-respectable.
Putting their names beside such controversial arguments has still come with a personal toll for both authors, but their recent success should be compared with the situation 15 years ago, when there was almost no one offering any kind of gender-critical argument in the UK media.
Back in 1997 Germaine Greer resigned from Newnham, a women-only Cambridge college, when transwoman Rachel Padman was appointed. In 2004 Julie Bindel wrote a piece for the Guardian about a Canadian trasnwoman who was fighting to become a rape counsellor in Canada. Even in the days before Twitter and FB they were piled on and Bindel's career blighted. Everyone in the media and academia took note. Perry knows as well as we do that it's been fear and threats that have silenced GC people. Pretending that everyone used to be woke but GC views are becoming fashionable is nonsense.
Calling GC views controversial is a tactic used by the BBC and other pro-trans media when referring to the 'controversial' LGB Alliance. Theres nothing controversial about the LGB Alliance, it's what Stonewall used to be.
Perry has covered her own back. If attacked by trans allies she can say 'I said GC views were controversial and only recently gaining in respectability.' If attacked by the GC brigade and she can say: 'I wasn't knocking GC views, I was only saying they've fairly recently got traction in the public sphere.'