Yeah the whole "this game should be made by ARC SYSTEM WORKS!!!!!" bugs me. People do it for literally any property under the sun. I do not see how ArcSys, a studio with a very very anime style, would mesh well with Nick and CN's mostly extremely westernized aesthetics.
Personally I think the obsession with ArcSys can come across as rather disrespectful to the other great fighting game devs out there. I feel besides the "I want my game to look pretty" aspect, it tends to feel rather pretentious, as I think it stems from a point around like maybe the late 10s or so where ArcSys gained this reputation as the Cool Kids' Fighting Game Studio, and that implanted this idea in more mainstream audiences' heads that fighting games need to be made by ArcSys or have ArcSys visuals to be good. It's very annoying and unpleasant