> So as we soon as we pass law making it a protected class, that argument will be null and void, correct?

For business discrimination in general, maybe.

For specifically constraining the expressive freedom of media (including social media) businesses, quite plausibly not, because a statute designating a protected class can't negate other people’s First Amendment rights, since the Constitution is superior to statute law.

I wouldn't hold your breath.

That's alright, I'm sure you would have said the same to civil rights advocates in the '60s, too.

Except, the civil rights advocates in the 1960's would have agreed with me. Denying business to racist institutions, starting with the Montgomery bus system, is how they got started.