I really feel like the middle three people haven't done a lot of reading in music history, OR think that rock and roll is a special musical snowflake to which the rest of music history doesn't apply.

Stealing from other cultures? Classical music has been doing that for years. Its main cannon is essentially Italian music written by Germans and Eastern Europeans. Its secondary cannon is "Asian" and "Arabic" music written by French people.

LSD? This man would disagree that Rock musicians were innovators in that respect, or in the respect that those substances can also really mess up your brain, as most often cited in the case of this man.

(As a complete aside, if you're a music buff and you've never read Berlioz's treatise on Orchestration, it's hilarious. He badmouths all the instruments.)

The... Guitar solo? Oh Come the Fuck ON. I mean, Rock and roll was barely a glimmer in Blues' eye when guitar solos, even electric guitar solos, were a huge part of the tradition. A better argument could be for "instrumental effects", but even then, Classical music has that beat by a few decades. Earlier if you count things like this, where almost all horror movie soundtrack tropes come from.

The invention of the radio, #1, and the "more open america" #5, both hint at the biggest Innovation in rock and roll history: The rejection of and breaking down of the racial barrier. Rock could never be what it was, or become what it is (for better or worse) without that rejection, and to an extent cultural appropriation.