I remember the old days reading comment section of Mangastream. People always bashed Fairy Tail for its nakama power up, excessive fanservice and how author hyped the villains only to ruin them later. Bashed Bleach for blank background (compared to One Piece lively background) and nothing much really going on each chapter. Didn't really read Naruto so don't know much about complains beside talking no jutsu and too much flashbacks.
But One Piece was always praised to oblivion, Goda, One Piece had so much going on in 1 chapter compared to 10 chapters of Bleach, Luffy is more likeable than Naruto blabla.
Now the table has turned. All shitting received by other manga, now One Piece does it.
Maybe except nakama power up because Oda still tries to make Luffy as an underdog forever.
Yeah, OP used to be good. Now it isn't.
It's funny to see people blame this on the fans, or create excuses like "fans grew up".
I got into OP 5 years ago, when I was 23 and had already watched many shounens.
Loved it till Dresrossa.
Clearly it isn't an age issue or experience/investment issue.
The quality really just started falling since Dresrossa.
Same thing with fairy tail. Was amazing till Tenrou, x791 was meh but had some greatness like Mard Geer and future Rouge.
x792 was pure unadulterated trash with Alverass. It isn't that fans changed, the quality of the series changed.
Blaming the fans for not eating it up is just cope.