> Also UK had law for years that can land you in prison for not providing decryption keys for data that you supposedly encrypted. It's not actively used, but it's there.

It is actively used, it's just most people fold and hand over the data [0][1][2].

[0] https://www.bbc.co.uk/news/uk-england-11479831 [1] https://www.pinsentmasons.com/out-law/news/court-of-appeal-o... [2] https://news.sophos.com/en-us/2017/09/27/campaigner-who-refu...