Similar to this year's Hi-Fi Rush, this is a game in a genre that is inflicted with the curse of an eternal discourse that revolves around one question: is a game good for its robust mechanics or its overall variety of gimmicks?
Both platformers and character action games are plagued by this kind of discussion, but as we've got the freshest hack n slash since DMC5 we've also got the best platformer since Celeste, people really underestimate "theme park" gaming when it's really done well. Even if Wonder isn't really that new, it's at least unique and fresh, which substitutes for the lack of power-up variety and how the badge system can overall make the game less difficult.
It's not without its flaws but this is arguably the best Mario in a long time.