The thing about the red river hog is that it being a good inclusion isnt whats debated about it, im quite sure everybody would atleast not mind them.let's be honest. Did anyone ever expect them to be the hot take animal of 2023? Once -if- they make it in, we can move on to this and pick another controversial animal to debate about.
The thing that sparks the fire is that the red river hog which is a nice animal but doesnt bring anything to the table besides their looks gets put over animals with actual open gameplay niches.
Its simply the posterchild for "yes you are nice, but you arnt needed" which is very weird for an animal with that much adoration.
On the other hand a leopard was for a long time among the top wishlist animals, so its not like its a first or worst as it atleast looks unique.
Rn we have so many actual open niches desperatly needing some representation like waterfowl, pelicans, non crocodilian habitat reptiles or non strictly tropical pigs and the red river hog simply is the by far most popular "redundant" (still its neat, 8/10 animal, but its niche is allready coverd) animal and the most obviously contrasted by similar just as good if not better animals that add something to far less represented areas and add pigs to new biomes (desert new world for the collared peccary, eurasian temperate and boreal forest for the wild boar). Couple that with the talk lately about what animals of each taxonomic groups are better picks then others and you got everything you need for something good to be suddenly discussed in a rather negative light.