This is the sort of comment that I don't think belongs on HN. You can't trash something you don't understand and claim it a curious and contrarian view.
I’d be willing to believe there’s a kernel of truth in there despite the harsh wording. Maybe the songs that become hits today do sound different than songs that became hits in past eras due to the different ways people tend to listen to music in those eras, like what sounds catchy through an iPhone versus what sounded nice on FM on an old Hi-Fi?
I don't doubt that but I think it's in the non-hits is where you'll find the difference. Streaming services incentives short ear worms but also allows any John or Jane to put it's music in front of an audience it otherwise never would have. The music people listen to most won't change but the variety people listen to collectively is truly massive.