I agree with Jamie Weir. It’s an ideological position to use non sex specific pronouns for someone whose sex you know, just as it is to use opposite sex pronouns.
By doing this, the curators are saying they think the terms man/he are divorced from the reality of adult human male.
It would have been perfectly reasonable to use “he” when talking about this adult human male/man. The only reason you wouldn’t would be if you didn’t believe he wasn’t actually a man.
And believing that if men castrate themselves and wear clothing typically worn by women it means they’re no longer men is very definitely not neutral but an ideological viewpoint, which the curators are signalling, and imposing on museum visitors here.
It’s also significant that instead of saying plainly and simply he was male, they worded it as “archaeologists have identified that this person had male sex attributes”. “Male sex attributes” is the kind of thing you hear sex-is-a-spectrum folx whiffle on about, again it suggests there’s some fluidity or potential for uncertainty rather than sex being a fixed, observable reality.
But tbh that area of life has been so thoroughly captured I would be surprised these days if there wasn’t an ideological push on the part of those organising this.
Makes no difference that it’s “plain speaking” Yorkshire: just look at the record of West Yorks Police, for example, in terms of ideology enforcement.