I was going to write basically the same thing and use the Trolley Dilemma, as well.
A few other things to consider, or at least that I considered when I didn't vote for Biden (or Trump): the state one votes in matters. I am a voter who votes in Washington state and the polls had Biden as a clear winner, at like 65 percent. Turns out those were a bit high, but it was still 59 to 39 percent, an easy win.
As a result, I found it easier to not vote for either of them. Your article goes over most of the reasons I also had.
There is one additional reason: censorship. I'm very concerned by how the Democratic Party seems to have aligned itself with Big Tech platforms like Facebook and Twitter and how there seems to be what I feel is an anti-democratic tendency to block or censor people depending on their beliefs on such platforms.
Much as I dislike Trump, I think he was/is less likely to work with said companies to kick people off of them.
Anyway, that's the only thing I'd add to an otherwise excellent piece!