I think there are objective standards of what’s considered good music.
Like wine.
People who don’t know anything about wine will say that it’s all a matter of taste. When you go to the experts, they will tend to agree much more with each other as to what constitutes quality.
I find that people who are not musicians tend to have a much wider view as to what constitutes as good music. And they will inevitably follow up with “If I like it then it’s good”, which is not true. It just means that that kind of music is the highest quality that they can appreciate, which is much different than what they said.