Right, but you aren't really acknowledging four realities:
1 - 90% of everything is crap.
2 - > if you actually make an effort
so now I have to be the curator! But I don't have time to sift through the 90% of crap. That's the point somebody else used to get paid to separate the creme from the top. You may have and unlimited amount of low value time to dedicate to listening to thousands of artists and tens of thousands of songs, but I certainly don't.
3 - even among curators, 90% of them aren't any good at it either, which is why, even if you shared your personal playlist of your very carefully curated list of songs that you spent 2000 hours last year carefully putting together, I'm more than likely to not like it myself. Being able to find good music, and then find an audience for your curation that is able to connect millions of people to those previous unknown is also a skill.
> You'll never run out of geniuses if you actually make an effort.
4 - then where are your multiple times a year new breakthrough artists that show up out of nowhere, dominate the charts for two weeks then are subsumed by newer geniuses? The charts are slammed full of artists who've been top of their game for 10-20 even 30 years now. It's the same old artists over and over, but that pales in comparison to the before times when you'd get something new and big and hit big every week.
I'm looking right now at the U.S. top-40 pop charts and there is on it this week -- no shit get this: Lady Gaga, Bruno Mars, The Weeknd, Charli XCX, Akon, Alphaville, Kendrick Lamar, Ariana Grande, and a few more that, let's face it have careers that are nearing drinking age in the U.S. Great artists all, but that used to be the age music shifted up-frequency to the oldies channel in the past.
If you disappeared from the planet in 2005 and showed back up today, you'd feel that the list was familiar. Where are your endless parade of geniuses on the top-40? We could have tight-beamed these old artists' entire discographies to Alpha Centauri and Back and they'd still be relevant and dominating the charts.