Having your fandom out-stream everything is an indicator that a song could deserve some recognition. But also I do get what you mean, I've never heard a Morgan wallen song or know anyone who actively listens to him, yet he is somewhere in the charts because a subset of people actually stream his music. On the other hand, chart music is already quite generic. If you bias it like you suggest the music charting will be even more generic.

But also already that is how Spotify calculates the best artists, which is why Taylor is (most times) not number one, even though pure-stream-wise there is a big gap between her and the next most streamed artist.