There’s an alarming amount of it about it.
Guardian article (April 2022) about [primatologist] Frans de Waal’s book Different: What Apes Can Teach Us About Gender.
Sapiens (2018) - in fairness a quite rigorous look at whether chimps & bonobos could have gender identities; with a not-unreasonable conclusion (spoilers!)
Somehow this November 2015 research paper published by the Royal Society - Primate archaeology reveals cultural transmission in wild chimpanzees (Pan troglodytes verus) - did not centre the poor trans chimps. Too busy focusing on the female chimps’ behaviour. Bet the researchers didn’t even bother to tell any of them they were valid. Worse than poachers.
In 2011 Scientific American were all about explaining female chimps are custodians, curators & transmitters of chimp culture. I say nothing re: males of any species being intolerable oiks 🤨
I think this particular nonsense comes from the 2008 article in the journal Hormones and Behaviour: entitled Sex differences in rhesus monkey toy preferences parallel those of children though.
People (well, National Geographic) then got very excited about wild chimps exhibiting those same behaviours in 2010.
Other people have built on the research, even if only in a very limited fashion eg the BBC trying it for themselves for “Horizon”. (With primates at Woburn; am not saying BBC is full of monkeys who spend their days twiddling their tails & playing with toys.)
Bonobos might be TERFs 🤔 - another 2022 interview with De Waal. Not what he says, but from the knowledge we have of bonobos, it seems highly likely that they would not recognise/understand TW to be women. No welcoming fruit, etc.
Anyway, yes, oceans of more interesting things to look at & consider but naturally people seize on the one - dubious - interpretation of a bit of research that was itself all about pandering to a trend.