I'm okay with a country jailing people for the crime of tweeting "we should murder all trans people". That probably should be a crime. Punishment should fit the crime though, so no more than a few weeks.
Literally never happened. You just are way too online if you believe that. Try visiting the UK sometime, you clearly never been and it’s a great country.
The US is allied with actual authoritarian regimes.
I'm not a big fan of the UK, I grew up there and left. But this whole UK is authoritarian thing is totally overblown in the US media and HN comments. Having free speech restrictions implemented by an elected government isn't authoritarian. You could even say that having totally free speech imposed by a non-elected government is authoritarian if people don't want it. These things are separate. I listen to UK media quite often (topical comedies mostly) and my feeling is that these laws are generally supported. There's a lot of negativity about social media from bullying up to incitement of violence.