We knew this would happen

If this wasn't entirely the best case scenario going into the election (that would've involved the Senate flipping), it's actually not far off. I suspect even if Biden had gotten the landslide voter suppression deprived him of, the Republicans would still be behaving exactly as they currently are. And large crowds taking to the street to celebrate the idea of Trump gone helps do away with any claims they make that his unlawfully staying in power is what the people want. They only way they can do this now is to openly override the will of the people. I wish I could be certain that would be enough to stop those them from actually doing so.
Honestly, I hope this drives Biden to break out the prosecutions. It's clear he'd prefer to just forget about everything they did these past four years, but for open conspiracy to overthrow the lawfully elected leader? He might just feel like he has to.