What kind of evidence would you take? If it’s someone from the project openly saying what I imply, there obviously isn’t any. But if you are looking for evidence that the project took a politically biased turn to one side of the aisle, I’m sure you’ll find a lot on your own. And from there you can understand why there isn’t a single mention of what’s happening in the UK.
In this very thread you can find lots of comments excusing the censorship because it’s being used to censor the “wrong ideas”.
I would even accept hearsay as better than “you’ll find a lot on your own.”
I totally agree these comments contain discussion of controversial cases, but your claim is surprising to the point of being unbelievable without any kind of support.
To give the most optimistic take: Perhaps in your country, one political party is much more pro-censorship than another, so an anti-censorship stance seems aligned against that party? That’s believable; it happens in many countries (probably including mine; it can be hard to tell, since pro-censorship is a very common stance here).