I am European, so, an outsider perspective, but....
I'd love to know actual numbers, because I get the feeling "commies who voted third party" are too small a group to swing elections. Just a quick look at the numbers on Wikipedia give 0.11% for the Socialism and Liberation candidate. Jill Stein got more, as did RFK even after he had withdrawn already, but I doubt they were the popular choice of the communists arguing here on Lemmy during the election campaign. (Where I, personally, argued for voting for first Biden, then Harris, because I did not see the left in the US as organised enough to react to the kind of oppression Trump would bring early, whereas I'd wager a Democrat would not have escalated like this. Just to root my own bias for context.)
I am not saying it is impossible that they could have swung a very close state, but I admit, I do think it is very improbable.
So, this feels very much like impotent rage to me, directed at the annoying but ultimately equally impotent agitprop people on here. They are loud on here, but do you really think they were that influential during the election?