Knittingacat
Women's and men's voices are on a spectrum in terms of choir ranges. There are men who can sing soprano or alto, just as there are women who can sing alto or tenor (or rarely bass). So I can't see that gender identity would be a problem in a choir.
IMO it would only be a problem if it was a women’s choir, which would mean men have to lie to join it. If you already have any I wouldn’t have known members (except you obviously do) with no problem so far, there’s probably no need to do anything.
Many of the new choirs starting up in the North West, including the one I go to, are mixed and you decide which range you prefer to sing, so if you want to be something you aren’t it doesn’t matter.
I agree with Lathyrus3 though, that they have a different timbre, but unless they’re singing solo, the audience are unlikely to know.