@Halo
Welcome to the issue with dogmatic beliefs.
The far left believes that the US is white supremacist patriarchy, profit is theft, and that every institution exists to oppression anyone that isn't a straight white cisgendered able-bodied man.
Obviously not everyone on the left believes that (for instance, me), just as not every Republican believes Biden will usher in Socialism or in Qanon.
I will say that the voter fraud doesn't have to be top-down, but if you have a few people with some institutional power in some districts, then it's very probable you could see mass voter fraud if enough people independently come to the same conclusions. Decentralized corruption as opposed to top-down corruption. I doubt that if there is election fraud, Biden himself would have anything to do with it. At most, you could probably catch a few bureaucrats who wouldn't let in pollwatchers, people who brought in false ballots, etc.
Having an investigation wouldn't hurt.
@BestBoy
What's interesting is that the paradox of tolerance is often misappropriated from Popper, as what Popper was saying was not meant to be a justification to suppress any view that could be intrepted as potentially harmful, but that there is a fundamental issue when people won't let conversations be had, let ideas be challenged, or that the party in question won't let rational discourse debunk any dangerous ideas. He believed only in using force if the intolerant would refuse to let any conversation be had or used force themselves to shut down something like a speech. (You can read more in his book
Open Societies and its Enemies)
I'd argue that means his stance has nothing to do with whether or not something is socially "acceptable" in terms of public opinion, (Overton Window and all that) but specifically in regards to the suppression of those who wish to suppress other's speech by any means possible. I think he would definitely oppose Twitter if he were alive today in how they handle censorship, given he was largely anti-corporate as well. (For reference, he was a Marxist in college but slowly he realized how their world view fell apart and began to criticism them along with the Fascists, proposing instead that a liberal system would be the best for allowing free discourse to take its place.)
I'm a big Popperian, so I know too much about his positions, but it's important to remember Popper was big on Freedom of Speech and believed that as long as you were not inciting violence or trying to shut down other's speech, that you should be free to express your beliefs. It's tied to his epistemological stances in regards that it's based on testing claims and finding what is definitely false until you get to a point of verisimilitude where you are close enough to the truth that it is virtually indistinguishable from it.
@Tlos
I've always been curious because I have plenty of concrete things I can criticize both Trump and Biden for, but I'd be interested to see what specifically Trump actually did that the left would find objectionable that couldn't be justified or applied to Biden. Like I generally see a lot of non-specific statements, but none of these are expressed really by Trump's actions I don't think, and I think Trump actually put into play some bipartisan policies that both the left and right would consider to be "good."
Also, Socialism is probably the last direction our nation wants to go in, and if Biden was an actual socialist instead of a Corporate Democrat, I think that would be an extremely poor choice to happen in the middle of a pandemic that caused an economic recession, where we should be focused on recreating jobs and promoting more business ventures, especially for small businesses which have been hit the hardest, rather than implementing socialist policies that won't help consumers, producers, or workers in the current environment.
(Note that things like universal healthcare, social programs, etc. aren't socialist, but that socialism entails the abolition of private property and collective ownership of the means of production. I generally favor small businesses over big business, but when you consider both the tragedy of the commons and the fact that collective ownership disincentives hard work and productivity, that Marxist Socialism is fundamentally a bad idea in terms of economics.)