Support him doing video greetings on Cameo? Sure.
It’s unusual for a politician but there’s nothing wrong with it.
Being pranked? It makes him look a bit foolish.
Not recognising the name of a sex offender is not “vile” or “disgusting”. It’s not a eulogy.
It’s not one more instance of political sleaze. It’s just being caught out.
Like Tony Benn not realising Ali G was an act, or David Cameron forgetting which football team he supports.