Ah hogwash. There’s tons of great rock music post 1979. I used to feel the same way. I remember a time where I only bought albums that were pre 1979. Then I discovered the 2000 resurgence and there’s so much good music in that time. I honestly think Low’s Great Destroyer for example since I’ve used that previously, is on par with the rock music of the 60’s snd 70’s. Or Mono’s Hymn to the Immortal Wind. Fucking amazing. Just as good as any Led Zeppelin album IMO.