The issue is that as music progresses and changes so too does distribution networks. Traditional, or even nontraditional to those from the pre spotify internet days, pipelines of music discovery have been largely co-opted by industry. Outlets of organic discovery are different now - and people typically don't continually keep changing their habits enough to keep up with it.
Pair this with the fact that most people settle their musical tastes to be in line with when they are experiencing the most emotionally significant time in their early lives (high school for some, college for others, etc) and the result is an assumption that
A) What they encounter forms an overall opinion of "all" new music despite being the tip of the iceberg and
Pair this with the fact that most people settle their musical tastes to be in line with when they are experiencing the most emotionally significant time in their early lives (high school for some, college for others, etc) and the result is an assumption that
A) What they encounter forms an overall opinion of "all" new music despite being the tip of the iceberg and
B) It's not as good as what they grew up on