Re: A couple of paragrahs to amend existing law.
Sure, of course it would - no argument there.
It would also prevent us using them to develop and run campaigns for social change (or even against a government intent on destroying the consensus on rights-based, open democracy). It would prevent communications of state abuses, of business corruption and political cronyism, of failures of government policies, of abuse by authorities (police, councils, etc), and more.
Plenty of people are happy to live in Singapore. It is probably one of the safest countries in the world. It is also one of the least free.
I, however, am not. British values have always been about freedom and openness, diversity, permissionless innovation and thought. Social media crap, and a certain level of day-to-day risk, is the price we pay for that. It is what my parents fought for in WWII. It is why I had to put up with the risk of nuclear annihilation as a small child. And it is what I campaign for today.