Those companies were operating in Brazil. They had income booked in Brazil that could be impounded. They had employees there and offices and had to comply with local laws.

4chan isn’t in the UK. 4chan doesn’t have UK employees or offices. 4chan doesn’t book income on the UK. 4chan didn’t have any thing to do with the UK at all.

If this isn’t convincing, consider this: legally what is the difference from Afghanistan requesting anything not legally in compliance with Taliban’s laws be restricted? Would you support that? Legally that is what is going on here.