Keeping children off social media, or to a very limited children only social media seems obviously a good thing.

My issue is the UK “free” speech standards seem to be something like free speech as long as its reasonable, doesn’t offend or excite too many people, cast aspersions on those in power etc, in other words not very free at all. And any form of internet registration could be used to tie more people to their posts.

Of course restricting posting some benefit exists as we seen in the US with robust free speech and twitter being overrun with third world posters attempting to influence domestic politics.