Chinese sites remove comments themselves too. They get "guidance" from the government on what to remove. Sounds like the French situation is exactly the same: the government lays out laws saying what is and is not acceptable speech and apparently, virtually all comments on this particular conflict are unacceptable.
I think the censor here is great for revealing what's going on, but his diagnosis seems odd. He thinks there's something different about this conflict in particular that results in more comments being taken down due to their content, but simultaneously admits that it's due to laws about anti-semitism which is specific to Jewish people. Perhaps if there were laws specific to Arab people and an Arab nation started doing what Israel is doing they'd see 90% takedown rates on those stories too.
Anyway to answer your point, I'm actually struggling to see the difference between this and what happens in China. The mechanisms and underlying logic are identical. It's actually quite shocking. I had no idea moderation rates would be that high.