Agreed.
Events:
Outside the X-men and Batman, the events were a lot more self contained. Now they bleed into ALL the books. In fact people used to complain that things like Gotham getting condemned was just ignored by Superman and Flash... but compared to Civil War and Infinite Crisis?? Ughhh so much worse. Infinity Gauntlet and Crusade had a few tie in issues... but nothing that you had to read to understand the story. Now? Major plot points are in the tie-in books and the actual events read like an outline. Winner? 90's easily.
Cover Gimmicks? Still happening. But WORSE. Back then, we had things like holographic covers and foil covers... and yeah, they jacked the prices up, but they were still less then comics cost now. And they were AWESOME, and they made sense. I'll take a Holocover like Dr. Strange #50
or a silver foiled Silver Surfer over pointless variants of characters as Legos, or a Venom month or Deadpool month... Covers should sell the books. If Venom or Deadpool aren't in the book... Keep them off the cover!! That's just plain false advertising. I was just talking with my comic dealer last week about that. too many variants and they all suck. It's pain to buy, and he hates the added trouble it comes just from ordering the things. Again, I'll take 90's any day for that.
Bad writing and Bad art are subjective, but I tend to prefer the 90's for that too. yeah, I couldn't stand Leifeild... but he was easy to avoid but at least the characters looked like the characters. I remember a 'silent issue' of Daredevil where Alex Maleev drew in Boomerang and Shotgun as assassins... But they were in street clothes and I had ZERO idea who they were. They were some of the first villains I had read, so I KNEW Boomerang and Shotgun... but they had to come out and identify them in a script a month or two later. Just... Bad art. Bad writing.
I also like to toss in the 'ultra violence' that the 90's get criticized for too. MUCH worse now. 90's had big guns and lots of blood.... 2000s-2010s had Civil Wars and Superboy Prime ripping established characters in half.
The violence, the gimmicks, the events... They never went away. they only escalated. If you hated them in the 90's, they've only gotten worse now.