Ah, the late 80's of 'metal'. I've been a lifelong lover of the metal scene, and this is in my humble opinion the most treacherously disgraceful and heinous era for the genre. What a bloody disaster.
There were plenty of good bands around but they were quite literally swarmed by a dearth of incredibly average hair-rock / glam-metal nonsense. Seriously, the share price of hairspray must've gone through the roof. Ugh, utter crud.
This part of the Western Civilization trilogy focuses on the Glam rockers, with their hair, wailing and groupies. The big names on the credits are mostly here for scenery: Ozzie Osbourne cooking breakfast, Aerosmith on the sofa talking about drugs, Lemmy chatting about 'the life' etc. Most of the music and interview moments are of the wannabe b-level glam crap unfortunately. Pretty disappointing and a missed opportunity in my opinion.