If these sorts of speech laws were more consistently applied on everyone, maybe we could get rid of them.
The result is that the police are still opening investigations they are asked to, and the CPS is still examining them; it’s a lot of energy spent on no outcome.
That is the actual problem, not the prosecutions, which remain unusual from what I can see.
There needs to be better guidance on the relevant legal standards. Separately we need to do something about (civil) libel laws, but that is a parallel and not criminal law issue.