You'd be amazed at the times I've argued with people on HN that free speech infringement by the UK government has grown rampant, only for them to enact the next draconian law a month later.
The reality is this will seriously chill speech broadly across the country regardless of either of those outcomes, and the technical costs of enforcement will be steep.
I mean there are parties that say they like free speech, but it never extends to the sort of speech they disagree with, or by people of the wrong colour/religion/gender etc.
The UK government has been openly doing this for a couple of years by now.