Since sponsored pokestops and portals don’t show on the Wayfarer map - I guess can see how it got added. Although it was a mistake, because it’s a generic business.
But removal reasons are a small subset of acceptance criteria. Mostly they’re only things Niantic could be sued over (unsafe, obstructs emergencyservices, or school). They added duplicate and permanently removed just because they’re easy to check I guess.
Another example - if a Gum Range gets into the game, it’s fine - ihttps://community.wayfarer.nianticlabs.com/t/gum-club-shooting-range/22769/13?u=margaritedville