AnotherGuy
Hero
I'd think most DMs are.If you're going to ban something because you dislike it, be honest enough with your players to just tell them that.
I pretty up front for my dislike of monks. I just don't think dudes in pyjamas using their hands while others are wearing armour, carrying shields and wielding weapons and magic should be effective. That of course is a subjective opinion and I realise that, but monks at my table are classes non gratae.