Not really. He should have just been a grown up and not tried to enforce his opinion on others.
I've already asked it once in this thread and didn't get an answer but would you be happy to put a message on a product stating "gays, you'll burn in hell"? A view held by some religious fundamentalists. I know I wouldn't. Infact I'd be rather impolite about telling them where to go. Yet I also accept they're entitled to their opinion, just as I'm free to tell them they're wrong.
No I wouldn't be happy to put that message on, but I do accept that others are entitled to their opinion.
But I also think the UK is a country where everyone has access to justice if they feel they want it whether or not they are correct. It is for courts to decide whether a case is justified, not you, I or any other member of the public.