Well I'd never heard of Bellowhead either, so checked them out on youTube. Quite a few movie clips there.
I suppose quite a few folks wouldn't really call that "folk", but they are quite entertaining. There's plenty of them, they fill up the whole stage.Some clever and well worked out arrangements.
The idea that if we say we don't like someone/something, then it's a reflection of how we are. I think that must be right, as it is a personal thing.
I think it's fine to say it, though maybe we don't really need to unless asked.
But why do we really like some music, or anything really. We can give reasons, but if you like it you just like it! Or the opposite!