Well, it all depends if the politicians actually care if this works.

You see, this bill was passed in 2023, under a Conservative government; then a Labour government was elected in 2024, before the bill came into force.

A nice little time bomb, set by the outgoing government - impractical and illiberal, but labelled all over with 'children' and 'cyber-bullying' and 'violent pornography'

So if the Labour government keeps the legislation, they look like heavy-handed censors silencing LGBT voices and local hobby/community forums, yet if they repeal the legislation you can criticise them for wanting children to have access to violent porn.

A Labour politician who thought this was shitty legislation, but who didn't think going on record as a pro-pornography voice would help his or her re-election prospects, might be entirely happy for age checks to be easy to bypass.