If this post was made by just about anyone else here I wouldn't think twice about it but coming from you is heartbreaking.
Stereotyping and extrapolating singular opinions, most often from a social media post of a non-elected official, is the straight from the far right playbook. It's wrong for them to do it and I'm embarrassed at how many decades I used faithfully absorb it. Worst yet, I believed most of it.
Off the top of my head look at the Cuomo or Frankin thread. Look at the dozens of posts from Democrats condemning him and of the opinion he should step down.
There have also been more than enough threads discussing how posters that normally vote R, didn't the last two elections because of Trump. I'm one of them. It would be tribalism if I did. I'll also point to my criticism of Elizabeth Warren last week in that thread. No need to rehash everything buth he has been a horrible person his entire life and even a worse president.
Is there tribalism? Absolutely. Don't paint people with such a broad brush. To say this is proof of tribalism by people who don't support Trump isn't accurate.
Your post, it's the first time I've ever seen it. I get my news from Google which includes Fox stories. It was obviously a joke but in extremely poor taste. As to why people aren't here laughing at him I think it's pretty easy, Biden has been a nice guy his whole life. Trump is a bully with the maturity and vocabulary of a ten year old. It doesn't matter if you are a war heto, disabled or have spent your entire life serving the country. Then there's that little matter of trying to steal the election and he's STILL sowing discontent. The only time in the history of this country there wasn't a peaceful transfer of power. There's no comparing Trump to Biden or Trump to most any other republicans past or present.