Bro, even if people weren't actively complaining about One Piece's animation before Wano, it was not particularly well regarded by anyone. The show looked incredibly dated and was in desperate need of a visual update.
Not only did Wano tackle a lot of the issues that plagued the show visually, like the shows almost complete lack of any attempt at compositing, but there was a significant raise in animation quality that has definitely helped raise the profile of the series, at least online.
Also, pacing isn't completely part of animation. Its a direction thing. Like, yes, they are related, but also, they aren't necesarily mutually exclusive.
Also, your continous comparisons to DBS only make you look ignorant.