I think I would agree with most of those, but I'll try to layout my own stance, then go back and re-read yours to see how close it is. I feel like I would divide them moer based on manufacturing and company structure than a collector mentality, although those would certainly in intertwined to a degree.
Golden Age: 1975-1983 Also maybe the Grip era since they're all about bikes with the addition of the early goggles. At this point, Oakley is still a startup with a small crew working out of a tiny warehouse.
Silver Age: 1984-1993 I'd include all of the early non-3D sculpted eyewear here. So the Frogs, Blade System, Mumbo (was December 1989 according to Lee), M Frame and the various Zeros. We still had a few things continue into 1994-1996, since the Eye Jacket design was a first entry and the entire lineup didn't change overnight.
Bronze Age: 1994-1998 A much shorter era than most of the others, but I feel it was a period of transition where they had to hammer out some consistency. We had the rise and fall of Frogskins vs Jackets, early X-Metal, the playing around with what logo goes on the temple, an older frame material, the move to HQ, and a naming scheme that eventually fell by the wayside (Jackets/Coats...Numerical names...etc).
Copper Age: 1999-2004 Another short era, but one that again played around with a lot of ideas. If we weren't going with metallic names, this would be the Mad Science era. First there was the universal overhaul of all the old models. The frame material became more robust, certain anti-counterfeit measures are added to the glasses, models are renamed to 2.0 or 'New'. In addition to updating the old models, designs became aggressive and imaginative. Some find this the 'sweet' spot if you're not holding the earlier eras in a level of personal nostalgia.
Carbon Age: 2005-2014 This might be the era that differs for me vs others, and no, I don't consider the Lux buyout in 2007 to be significant (at that time, mind you). Starting with the Square O, Stretchline and general shift to lifestyle, we get later additions of the Collectors Frogskins and many further models built on that base or the Gascan theme. This is also the point where I would be choosy about models, vs. not havign a problem owning anything they made at a given time as with pre-2005.
Modern Age: 2015+ 8 years after the Lux buyout, we start seeing things really take hold. I'm not as vocal as most since otherwise why would I still be continuing this site, but the company shakeup, removal of the Made in USA stamp, and the emphasis of periodic color themes vs new models, has been prevalent. There's still enough to keep me interested, but just enough.