RHEL specifically is now fenced off. Supporting it's barely any different than supporting macOS or Windows—do it if you are targeting it in particular or person

RHEL specifically is now fenced off. Supporting it's barely any different than supporting macOS or Windows—do it if you are targeting it in particular or personally use it, sure, then you get benefits, but otherwise, why give them free labor? Contribute to projects Red Hat uses on which they contribute back, sure, by why straight-up work for them for free? That's what supporting RHEL on a volunteer basis is, now (again, unless you personally use it or care about specifically supporting some users who do).