That’s hardly the reason. If you had a multi-party system the voted would be even more spread out between the candidates which makes it even less likely for a candidate to get more votes than the non-voting population. However a multi-party system would significantly lessen the possibility of getting oligarchic control because you wouldn’t have to choose between 2 shitty options, you’d have to have multiple shitty choices for the shittiest one to win.
There are gifs of side by side comparison with literally Hitler doing the exact same movement. There side by side gifs with neo-nazis doing the exact same movement. You have Germans saying “Yeah, that was totally a nazi salute”. You have historians saying it was a nazi salute.
But okay, let’s say it wasn’t a Nazi salute. There’s mainstream sentiment clearly indicating that people thought it was a Nazi salute and he definitely is aware of that sentiment. Why hasn’t he said “it wasn’t a nazi salute. I never intended to make it seem like it was.”? Any sane person would instantly try to distance themselves from being perceived as a Nazi because nobody, besides a dumbass nazi, would want to be associated with nazis.