How dare teenagers not become Neoliberals while growing up in a late capitalist hellscape where climate change can't be taken seriously because it isn't a profitable problem to solve.
There's a lot of space in the left that isn't stalinism. You can be a communist and have a deep critique of how 20th century communism worked, a learning from it and not wanting to repeat the bad parts.
In leftist circles in the US, weird Stalin and Lenin fans are loud, but ultimately not that common.