JKR is an interesting counterexample for a number of reasons. One is that she was very careful and tempered in her language, as one may expect from an expert writer and of someone with her keen perception of language. If you search her tweets on this topic prior to Musk's ownership (e.g. "from:jk_rowling until:2022-04-14 trans" in the X search box) you'll see what I mean. Another is that she spoke out on this topic fairly late on, and so would have witnessed the censorship and been aware of how best to express her views around these limitations. There is also the fact that hers is and was one of Twitter's most-followed accounts and in practice that would give her more leeway in terms of freedom of expression.

I could search X to confirm to you what I personally witnessed with regard to feminists who aren't JKR being censored and banned, but that would take some effort and I'm not yet convinced that it would be worth it, given that you're engaging with an attitude of aggressive cross-examination rather than curiosity and open-mindedness. This is also why I enquired as to if it might change your view.

Would that change your view?

You should perhaps do more research before making claims like "flat out falsehood".

They were literally being silenced for expressing their criticism of the ideology of gender identity and how it is being used to disadvantage and oppress women and girls.

On X, however, they are free to state this without fear of censorship, due to the broadening of permissible speech on the platform. So while it might not be the "free speech absolutism" that Musk disingenuously claims, it's an improvement to the pre-Musk era of censorship.