Yeah of course “proper” doesn’t really mean anything when talking about idolects. I’m curious though–I’ve been trying to get more information about the /wʊmən/ pronunciation for awhile. Do you know what region it’s common to? That pronunciation doesn’t show up in any dictionary (or at least any American one) except wiktionary and whenever I search for it there’s not much info about it. I’m trying to figure out if it’s regional or a more recent trend spread across a younger group online or something.