Like most of these things, one can bemoan it and say “oh it’s terrible that this is how it is” but I think it’s pretty easy to self-test this to see it’s adaptive for a reason.
Brendan Eich was fired from Mozilla as CTO because of a small donation in favour of Prop 8. Fine?
I think most people here would say yes. In fact people did say that.
I think many people would say they don’t want to have a plumber who opposes (say) trans rights. Or read an author who is anti-gay. Pick some view heretical to your world-view and see if you can stand to encounter people who hold it.
If you require all purity you probably prefer the uni-context.
But people can never be "pure" enough and what is acceptable in the uni-context will change over time. If you documented your life within it you will find you will be branded a heretic sooner or later.
It also works both ways. Yes a plumber can be more easily outed as anti-gay and fired, but the same uni-context makes the plumber more likely to be anti-gay and more strongly anti-gay in the first place. Being exposed to anti-gay propaganda all the time will do that. Otherwise you just have people who are like, their church told them it was bad to be gay, but they don't really care about it.