Daniel... have you had any music lessons at school?
You understand melody and how it accompanies a piece of music? Flute, violin, piano, guitar, vocal... its all the same.
Most Classical musicians see pop music as diluted, mostly because of its limitations and shallow composition. A 'solo' is traditionally a melody that got blown out of proportion in the 70s and 80s so then suffered a backlash or 'Anti' crowd.
Gregg Ginn in Black Flag played a lot of solo's or short melodies, a dissonant player maybe but not 'anti solo'.
'Anti solo' to me means players that refuse to play (or cant play) flash or traditional blues based solos. They will still play a melody though in most cases and if they dont the singer will be adding a melody, or even the bass player.
So yeah, Earth was more or less right really 😆