Sorry if this is a bit off topic, but id like to put a gentle reminder here that it doesn't help when political trolls show up pretending to be Democrats and start agitating people and causing infighting. There's actually sociology term for it. Covert trolling.
Sure, not everyone defending biden or those against biden was a troll, but I recently saw enough of them in the mix trying, and succeeding at causing infighting between people who otherwise agree on political issues.
I find it's helpful to remind myself that a lot of the people espousing inflammatory opinions and generally being rude online are trolls, and they don't reflect the real opinions of most of the population.
The trolls want to control the Overton window. We stop that by educating ourselves on their tactics, and recognizing them when they show up, and not engaging. They love nothing more than wasting everyone's time with long comment chains filled with circular arguments.
Also, your feelings are totally valid, just don't let shitheads make you bitter. I'm sure a chunk of the people you are calling out were instigators, and not people who actually believed what they were saying.
Sorry for the long comment, and feel free to ignore it if it's unhelpful to you!