Plenty of Top 40 is still generic easy listening for anyone. Ed Sheeran - Perfect is the 8th most streamed song on Spotify and could have been released in basically any era. Bruno Mars - Uptown Funk is the 6th most viewed video on Youtube and sounds straight out to the 70s to me.
Absolutely - if Ed and Bruno were more prevalent, no doubt. But look at the actual Hot100. It's just not that, it's very dominated by unlistenable stuff.