found the AFAQ questions starting from https://anarchistfaq.org/afaq/sectionJ.html#secj22. They are quite long but they do make a lot of good points.

J.2.2: Why do anarchists reject voting as a means for change? Simply because electioneering does not work. History is littered with examples of radicals being voted into office only to become as, or even more, conservative than the politicians they replaced.

J.2.5: At its most basic, anarchists support abstentionism because "participation in elections means the transfer of one's will and decisions to another, which is contrary to the fundamental principles of anarchism." [Emma Goldman, Vision on Fire, p. 89]

J.2.8: As Emma Goldman pointed out, "if the Anarchists were strong enough to swing the elections to the Left, they must also have been strong enough to rally the workers to a general strike, or even a series of strikes [..]

But I'm fine with people ignoring these considering the circumstances of the american election. It could be said that the looming threat is great enough that stopping it should be a concern.

But still I don't think america will change FPTP. It would rather collapse. The parties in power have too much to lose. It would only work if you managed to get the currently non-voting population to back election change in a big block. Maybe a petition signed by most who don't vote will get their attention but it seems unlikely to make something like that.

It is at this point I should probably mention that I'm European and so am just looking at this as a spectator.