I think that if Cacomallow was fake, the faker would've come forward at this point. It's pretty clear that whatever they did was rather impressive in regards to modding (Seeing as how its been over 2 months and no one has managed to recreate it). If I were them, I would've taken the glory after a week and shown how I did it. People in general are attention hungry, this dude likely would not have remained anonymous for so long when he could be known as a great Smash Ultimate modder. It only took, like, a week for ArtsyOmni to come forward with his extremely impressive fake, so I don't see why this dude wouldn't claim credit similarly. There's a chance that he's playing the long game and is really just a master troll, but those chances are pretty slim imo. If I were him, I would've come forward over a month ago.