alt Hacker NewsThe whole psyop thing is only an issue if you use "popularity" and mass appeal (people following in instagram, etc) as a signal for finding stuff.
The alternative is to listen to less filtered/signalless stuff (which isn't hard - bandcamp new releases lists (or my bandhiking app) or even their trending charts which seem to be unpopular enough that it's not entirely controlled by marketing (lots of unlistenable stuff makes it onto the chart) and meet/hang out with other people who do the same for a minor filtering pass.
Some of it will suck.
Popularity is the most popular (!) signal because this isn't really about the music - it's to have something to talk about with your friends, whether to bond over shared interest or signal something about yourself to your group. The same is true about any other interest: most people care a lot (arguably, primarily) about their interest being recognized and supported by other people.
Those of us who care about an interest for the sake of that interest, are called nerds.