This is an argumentum ad populum fallacy. "Everybody Knows" this kind of thing is true, ergo you should believe the example here without evidence.
It's also kinda ridiculous in context. I mean, no, there are no cases in the literature where Google has rejected an app due to misidentification with NFSW content and then sent screenshots of said content as part of the review. Even not in combination I don't think. Like, has either situation every been documented on its own? "Far from outside the norm" indeed.
A much more charitable reading would be something like: Numerous people have all made this complaint, therefore the broader point is probably solid, even if this particular example might not be iron-clad evidence on it's own.
I've certainly heard enough similar stories that I don't have much trouble doubting this one, although I'd hardly consider any one story super-convincing on it's own
Fair.
> It's also kinda ridiculous in context. I mean, no, there are no cases in the literature where Google...
Ok you lost me. What is "the literature"? Published scientific studies about Google's app review process? Obviously there aren't any of those. Blog posts? You (presumably) just read one, and if you take a minute to search, you'll find tons more. News articles? Perhaps harder to find, but definitely exist.
The whole nudes thing is just a funny outlier; don't fixate on that. Who cares what randomly chosen reason the Google overmind decided it didn't like you. The point is it feels like a dice roll and you have no recourse when you suddenly and randomly fail it.