There is an enormous difference between the status quo of the intelligence services being granted permission to monitor your specific internet habits where and when there are grounds to believe you are up to no good, and a scenario whereby much of the internet is censored and prohibited by default by the State, usage is monitored as a matter of course, and anyone found using methods to access that prohibited content, even if it is nothing more than factual news sites hosted elsewhere and therefore outside the jurisdiction of your government, is prosecuted and imprisoned.
This is where we'd inevitably end up with government that considers blanket bans and pre-emptive censorship as a proportionate response to content it can not restrict by any other simple means, because it's precisely where the internet has ended up in existing States where the government takes that approach.
You think Restore will be worse than Labour?
Restore is all about Freedom and Liberty.
They will repeal this if they can
Restore's "Libertarianism" is entirely performative and only applies to the rights of people they approve of. There isn't a hope in hell of this sort of legislation being rolled back by any government once its on the books, Reform and Restore included, because every government would find it far too convenient and it would also signify a watershed whereby the public would be meekly accepting State censorship, meaning this sort of thing would only snowball. It would inevitably end up in a bunfight between Government and the Courts, but as we are witnessing in the US, if the courts stand up to Right Wing despots, the despots simply destroy the court system, fill it with lackeys, and pursue the people who had the temerity to stand up to them in the first place.
Couldn't/Wouldn't happen in the UK due to "Democracy"? Well plenty of people thought the same about the US until they elected a disgrace of a human being President, and gave him and his criminal cartel of mentally subnormal deviants carte-blanche to trample all over perceived "rights" and norms, and debase his Office every single day. Despots don't give a single shiny shite about what is fair, just, or legal, because they'll just abuse the fact that democratic constitutions presume the public isn't stupid enough to elect criminals with no respect for the Law in the first place.