There's more than one kind of preference in the world. Do you give every radio bro metal band a fair chance and thorough listen before dismissing them, or do you use a filter to immediately ignore bands that use MTV airtime, large marketing campaigns, etc?
If I saw a band plastered on billboards, I would immediately assume they're not worth my time. Similar thing of artists famous for their musical illness. Very few worthwhile artists that killed themselves.
you are literally the last person in the entire world i would use as an indicator of wider opinion lol. i'm just saying if anything the mental problems/suicide/whatever of band members makes bands more popular, not less. especially in black metal communities where that's sometimes the sole calling card. if said mental illness manifests as aggressively kissing dudes on stage then ok yeah this probably no longer applies