People's reactions to more modern styles of music are often heavily and viscerally negative, due to the lack of exposure of such styles in popular culture. It's easy to trust that initial reaction and dismiss it all as garbage instead of than putting in the effort to get what it's all about. It's also easy to make fun of people that do make these broad dismissals on the internet.
It's just sad that it happens today in real life academia, though. The professors at my school encourage openness to all styles of music and don't fall into traditional or progressive camps, and the thought of it being any different seems really alien to me.