@RatherBeReading
The letter is of course enraging but even more so is the culture of pushing this agenda on young people amidst what should be a bastion of interrogative thought. My daughter's an Oxford undergrad and it is constant, from the "womxn's rep" on her college JCR, to welfare meetings beginning with an exchange of pronouns.
Lots of people - especially male students - go along with it in bemusement, or with some eye rolling, she observes, but others (particularly those involved in left wing politics and self-proclaimed feminist activism) push it very hard. Her subject is one where women's issues come up a lot so she can point out the lunacy in 1:1 tutorials sometimes, but amongst other students she feels the need to be very careful. She notes that its the only thing where even questions aren't allowed at JCR meetings - debate and discussion happens over every single other issue but questions = terfiness apparently. ("No debate" is the only option when defending an argument with so many holes in it.)
It's much like this at my university as well, although equally it's racial issues. There is not a society, a meeting, a theatre production, a project by the university, a special summer program, anything, where there isn't a focus on one of about three SJ issues, and only one perspective allowed of course.
It's as if they decided climate change was the only issue, so every class talks about it, only student plays about it are allowed to be produced, every book is discussed in light of it, ever speaker invited says something about it, and every new project or endeavour related to it.
You'd get sick of it pretty quickly and not care even when it was relevant. IT reminds me of the way my 13 year old daughter tries to wear me down on topics.