I live in the UK and nearly every older Communist you meet is a Trot and all the protests that I've been to that have had communists at them were mostly Trot orgs but online everyone just seems to shit on them for no clear reason. Am I missing something? Or is it just regular leftist infighting
Yeah, the later parts (in which there aren't quotations from self reports and such) aren't bad and even have some theoretical accessible insights.
There is the great problem though to act as if trotskism is the same today as it was then and that the label means the same thing. Both which isn't quite true.
The experience of trotskist groups (with that I don't mean following trotskism, but self identifying and sometimes being identified by other leftists as trot) - or rather with those groups - in the last 70+ years is relevant.