If you are talking about me, it's just my opinion.
If you are talking about Exodia being on this game...
Lots of people has weird tastes, and there is even people who doesn't really have a weird taste but like lots of funny things in the middle of their porn (we do have a tag called "humor"). I'm not one of them, but as I said, no matter if it's a hot character or a joke, more characters in a game like this means more items, and such items can be used for other things, so it's never something useless. The problem is, like I said, that items that has no customization options, or are "way too much parts in a single one instead of separating categories (shirt, gloves, pants, etc)", these items reduce how good is this thing of "more items are always welcome".
Anyway, I don't really see a reason for the dev to be mad about Exodia winning a pool or something like that. They are doing what their public want to see. Also, this also serves to attract new people for the game (the first comment in this page is "I had to redownload it"), so maybe more people will get to know the game and even subscribe to their Patreon, bringing more money and new content. The only problem, however, would be if there was way too much people wanting something that the dev don't wanna to be the main thing, but with characters that really have their lewd public like Astolfo and Venti making their way into the game, I don't think that's the case.
