As someone who's a millennial and also have been involved with music in different ways (and has a perfect pitch according to others) all my life. I know it sounds like a cliche, but "they don't make 'em like they used to".

I can't name a single musician/band of today that stand up to sheer raw talent of the likes of Beatles, Abba, Queen and others from that time period. They were absolute titans of music with unparalleled achievements. There's no band that can make teenage girls go crazy and chase them like they did Beatles. There's no band like ABBA that could fill a concert hall 600 times if they sold all the tickets people wanted to buy when they only intended to do a single concert. There's no band that can make 300K people sing along during a concert like Freddie Mercury could. I laughed at a comment that I read on Youtube couple of days ago: "Year 1980 - Queen is the best band ever. Year 2180 - Queen is the best band ever.", but then I realized it could end up being a fact after all.

Music of today feels overly commercialized, cheap, forced and streamlined. There's also a "mathematical" problem where composers are running out of unique melodies for the classic 3 minute format.