That's a popular and socially safe point of view, but it's completely wrong. Artistic merit, like truth and beauty, is an objective quality completely orthogonal to cultural differences or personal opinion. To illustrate this orthogonality, I invite you to realize there exists art which has great merit and yet which you personally do not like. You should be able to do this, if you can't manage I can provide my own examples for you. The existence of such art proves that personal preferences don't weigh on the recognition of artistic merit.