As an American socialist who has to deal with the collapse into fascism there is no material reason for me to advocate for accelerationism
Maybe if we already had a basis for socialist revolution to save us it would make sense. But there isn't, collapse just means something worse is coming.
So socialists from other countries are cheerleading the collapse of us imperialism, which is objectively fair. But I also have to wonder how wise that is considering what I said above, the US isn't collapsing into a peaceful socialist state but instead a war hungry fascist state which does not put an end to imperialism but rather makes it more direct and brutal
Either way, tankies seem to only admire theory and countries that say they're socialist but actually aren't. If your idea of socialism does not expand the definition of democracy to the workplace all the way up, with recall of representatives where direct democracy isn't pragmatic, I don't think it's even worth considering as an alternative.