You do not have to like or dislike a thing in order to see it has quality. I have seen many things which I might dislike but know they are of good quality. For example I dislike the pattern and colours of a rug my wife bought but I know it is well made and of good quality.
I have heard people crucify songs that I normally love or perform very well songs that I usually dislike. It does not matter what is being performed we all know if we are honest whether someone has or has not got any real talent. Why are people so touchy about this? There is a big difference between not my cup of tea and not very talented.