Nope, not for me. You're right I didn't give 2012 long, 2011 I did actually play it a while in the hope I would get to like it, but never did and 2012 wasn't much different. To say they are anywhere near the PS2 generation of games is in my view ridiculous.
I do remember the PS2 days, but no I don't remember them not making a great first impression, I was always impressed from the outset. I didn't experienced anything like what you did.
It's more evident of how much the new ones pale in comparison when you play them back to back with the old ones, the gameplay is like night and day.
The PS2 games do have the very best in the series, but it's wrong to think each version was perfect because they weren't.
Pro Evolution Soccer - Not outstanding in its day or looking back, especially being next after ISS Pro Evo 1/2 on the PS1 which were both up there with the very best in the series.
Pro Evo 2 - Superb at the time, but this one in particular is very difficult to go back to, just doesn't hold up.
Pro Evo 3 - Didn't enjoy this so much after how good 2 was, holds up better than 2 though and actually still plays a decent game of footie today.
Pro Evo 4 - Loved it, best from an exceptional series, don't see this ever being beaten.
Pro Evo 5 - Didn't enjoy this at all coming from 4, probably played this one less than any other entry in the series.
Pro Evo 6 - Another downward step by Pro Evo standards, put up with it because it was the first next gen title but the decline at this point was two games in and about to get a lot steeper.
Saying that I'm not trying to tell you what you should should think about the newer games, if you don't like them you don't like them. I'm just saying PES 2011 and 2012 have been very much in line with the old formula (having put many hours into both). No they're not up there with the best one or two games in the series, maybe not even top 5 if you include the PS1 games, but they're very much cut from the same cloth as the likes of Pro Evo 1, 3, 5, it becomes apparent after putting some time in with the game.
It does surprise me though that you didn't experience the doubts with each new game, with every single PS2 iteration there were significant changes made, often in both the look and general feel of the game. It's only natural to wonder at first if they've messed up, especially if the previous game was one you were particularly fond of.