I'm referencing the many other classes that are perfectly legal to discriminate against. and the allowable discrimination is becoming broader.
But this disagreement highlights this major problem the US faces.
We live in two increasingly separate realities with different 'facts', where obvious is totally different based on your identity.
the one religious non-belief class example I gave is the football coach prayer case.
to me it's an obvious overreach and clearly breaks secular education norms (and past scotus rulings).
to such an obvious degree that the minority (on the court, majority in public opinion) broke precedence and put photos directly refuting the 'facts' the majority claim are truth.
that's also a bit spurious. i don't think anyone is arguing that churches must be forced to interview (or hire) other religions.
but the majority does believe that the state & courts shouldn't create laws that expressly allows someone to discriminate or refuse to provide service to someone else just because they are gay or trans or use different pronouns. or deny an adoption. or disallow kids from playing incredibly low states high school sports. or ban books. or not talk about gender & sexuality. i keep using queer-centric issues because that's my identity and I can speak to it better than race/trans issues. there are plenty of examples there too.
it's minority religion dictating laws that affect our lives and explicitly allowing those beliefs to take away rights from the rest of us.
If it were not, mosques would be legally compelled to hire rabbis and churches would have to consider hiring druids for services.
Where the line ought to be drawn is nowhere near as obvious as you seem to think it should be.