Okay, I'll bite. (Down, Krypto! It's just an expression.)
In my opinion, the "bronze age" has some very positive aspects. Most notably, strong continuity -- events in one story generally had consequences in the following stories -- and dynamic characters, attitudes and relationships that changed over time instead of being stuck in an eternal status quo.
I think the biggest problem with the "bronze age" Superman was the writers. In my opinion, Byrne was a mediocre writer at best, and Marv Wolfman wasn't much better; the series was much improved when other people like Ordway, Jurgens, and (especially) Kesel took over.
I always interpreted "Bronze Age" as running from c. 1970 through 1986 (and Crisis/Byrne's revamp)---so when I said "Bronze Age" I was thinking of the Maggin/Bates Supes, not Byrne or his subsequent writers (who'd fall under "Modern Age" by my definition.... guess you can use "early Modern Age" if you want to distinguish those guys from more recent comics...).