Well that "minority" is making it really hard to like Waluigi.Those people are a vocal minority among the Waluigi fanbase.
Don't generalize, man.
If I was Sakurai and I saw this spamming my feeds I wouldn't make him an AT or even make him into a regular trophy. There would be no mentioning of him (like he did with Custom Robo in Smash4) at all. Just to give them hope he'll be in it but never actually put him in.