I guess that might be a more European phenomenon where there was more of a Marxist-Leninist presence, versus the US/Canada where Trotskyites have historically been more organized. ML parties in North America weirdly would spring out of splits from Trotskyite parties, rather than the other way around. Even now the PSL, one of the bigger ones, traces its lineage back through Sam Marcy's split from the Trotskyite Socialist Workers Party.

It really is wild to me to think about how so many higher level European politicians were throwing Molotov cocktails 40 years ago and have ended up becoming the very thing they were fighting against in their youth. Time is weird.