To my understanding, what happened with Tumblr was moreso a compounding situation; the Apple app store reviewer managed to just find NSFW content in general, fo

To my understanding, what happened with Tumblr was moreso a compounding situation; the Apple app store reviewer managed to just find NSFW content in general, forcing Tumblr to change the app to remove it. Before, under Yahoo, they'd just put some new hoop in the app to prevent users from accessing adult content, but by the time this particular Apple review rolled around, the sale of Tumblr to Verizon had already been finalized. Which created a situation where an outgoing management pretty much ordered to not bother fixing it and just banning it all, hoping that Verizon's "family friendly" policies meant that it wouldn't jeopardize the sale (which it turns out, the sale wasn't jeopardized). You can still kinda see it in how broken the actual removal was; they just excised the NSFW from the frontend by marking the posts as sensitive on the API and then preventing the frontend from viewing anything sensitive. For years (and maybe even today) you could just scrape the API to find NSFW posts, although that's on the decline since most NSFW Tumblr accounts have been deleted entirely by the actual people behind them.