Well, most rock musicians of the past

Most rock musicians today are hobbyists and have jobs that support them because there’s no market for rock music anymore

That doesn’t mean they can’t also be sleazy, only that it’s a lot harder to be a sleazy rock pig on the level of a Gene Simmons circa 1977 when you’re broke, no women want to hear your music, and you can only play gigs locally, on nights when you don’t have to work the next day