Are you in America?

Nope.

wr have literally two choices: shitheel Hitler or old establishment.

Even from here it's pretty easy to see that those are not two mutually exclusive things.

I would LOVE it if we had viable third party candidates

But you don't, do you? Do you think it's some coincidence or "Act Of God" that you don't?

So yeah I’m going to throw all my weight behind the candidate who ISN’T parroting shitheel nationalist rhetoric.

If that makes you sleep better at night, be my guest. Hell, if I was a USian I'd probably do the same.

Your complaints against Biden are valid and worth discussing…

Biden is not the problem - it's the political establishment people like him (and Trump plus the rest of them) represent. That's the problem - and voting is not going to fix that.