So I live in what, at times for me, is a highly aggravating environment: I live in a very liberal/left wing bubble in a Republican state, Alaska. Dillingham - permanent population of something just north of 2500 people - is a regional hub, generally a good place to live, and maddeningly quite liberal/left leaning. Because of this our local government drives me bat-shit crazy, I loathe my local state rep, and the good townsfolk of Dillingham are overwhelmingly supporters of Biden.
I bring this up because when I look at my local situation and see it as a microcosm, it actually is easy enough for me to believe that Biden was, more or less, fairly elected. I'm not suggesting the election process is without issues, or even some level of corruption, but the idea he could garner enough votes to win? Sure. I can believe that.
I think the far bigger issue - just my opinion - is the majority of American voters today. Far too many want what's easy, don't look beyond the surface, have a form of ADHD where national level issues are concerned (or just flat out apathy), and worse - they are raising up the next generation to be even more inclined to be that way. Dear heavens, here in Alaska? Everyone wants a government handout - as many as possible and keep them coming.
No, I think it far more likely that
@rookhawk 's analysis is closer to true than it's not, although the optimist in me wants to believe there is some sort of failsafe ahead of us still that will help to get us back on the right path.
Is our election process perfect? Nope. However, if it's Trump and Biden again come November, and Biden wins again, I think it'll be a lot less about whether it was fair or not, and a lot more about too many Americans just don't give a sh!t and want what they perceive to be the easiest path - the one of least resistance. Pulling some of those middle ground to just left of middle folks back from the brink is going to take someone who has tact and patience, which is exactly why Trump will once again fail, if he's our nominee.