The comments are a bit mad but the question itself seemed fairly reasonable- lgbt+ staff group, pronouns on email sigs if wanted (technically encouraged but no issue if you didn't) and lanyards for all sorts of random stuff were standard at my last job so none of it seeks inappropriate or excessive. There were a few hard-core members who wanted to mandate pronouns but this was given fairly short shrift.
Unless the letter writer has misrepresented what's going on in the organisation (which could be a possibility i.e. people feel bullied into using the lanyards/declaring themselves as "allies" or are shunned) I can see why people are upset at suggestion of removing things that are fairly innocuous.
Reading AAM is very enlightening in relation to the huge differences between UK and USA employment law though. Also the way so many people in the US literally cannot conceive of things being different elsewhere.
She also uses the terms "grand-boss and great-grand boss" etc to denote layers of management hierarchy which make me cringe.