A lot of people on here seem to not understand defamation cases. You have to PROVE it's defamation, this is likely the only way to guarantee they'll win a case. Either that, or they just ignore it and allow these nuts to do it over and over again to anyone with zero consequences.
It’s because in the uk libel laws require the evidence that the statements made by the defendant are true to be provided by the defendant. It’s one of the reason our SLAPP laws can be used maliciously.
I get that it 100% paints being a trans person as some sort or gross thing which is 100% is not, but this is a defamation case and to win it, you need evidence that is flawless and indesputable. These GCs seem to focus on biology only so much, that'll go against them.