I've been checking Twitter Trends here in Japan for the last ~3 months, prior to the Musk acquisition, and I've always thought it was fascinating how there's very little political discussion. I don't think this was related to the curation team being axed at all.
As another sample, I'm in Singapore, and the trends last night were about the American election, nothing seemed to be that different than before Musk took over.
Japanese people do talk politics occasionally, like when Abe was assassinated (that had many people worried about gun crime becoming a problem), but it's nothing like in America, where it's ever-present. They will occasionally talk about foreign politics I've found: many don't like China, for instance (which is understandable, Americans don't either), but domestic politics just aren't a big topic.
It doesn't surprise me at all that Japanese Twitter echoes this.
Politics is not all encompassing in the UK either, it's mainly an American thing imo.
But in daily in-person life, you just don't see the extreme politics that you see in the US. Nor do you see it in the regular news outlets. The only really obvious political stuff you see here in-person is the annoying sound trucks blaring far-right political messages. But I haven't heard one of those in quite a while; maybe I'm in the wrong place.