Yeah, a lot of the hate nowadays is directed towards Incineroar. At first, it was initially on the Popplio line (with people fangasming over Rowlet) and then the final evolutions got revealed and reception towards the line was a lot more neutral. Decidueye was also well-received, leaving the wrestler cat in an awkward middle-ground position. I presume it's largely because of the design (another bipedal fire starter) and the fact that it evokes shades of a Fire/Fighting starter, despite the fact it's Fire/Dark and it makes perfect sense for it, being a heel wrestler and all.
Shame it is bashed, because Incineroar is the best Pokemon right now in VGC.