I think the point, though, is that it's normally a very low number. This year all of a sudden it was way, way higher. It's odd at the very least.
I dont find it surprising a huge chunk of the nation was influenced by the constant bombardment of Trump hate from most media sources, late night talk shows, SNL, social media as well as his own words from the moment he announced he was running and all through his presidency. Couple that with what I see as a huge amount of peer pressure to bash and/or hate Trump and the fact women seem to be especially outraged by him who in turn probably cucked a lot of husbands into voting against Trump to simply keep the peace in the house.
Plus you have the covid storm where people are stuck at home with time on their hands, more mail-in ballots than ever before (I think) and we end up with huge voter turn out.
Fraud could have occurred on a level large enough to influence the result as well but if there's proof as Guilianni and others claim, they better get cracking as time is running out, if it hasn't already.