Earlier quoted context omitted.
I'm curious why you would choose to maintain Verizon's policy changes that alienated the majority of the user-base.
Adult content is not our forte either, and it creates a huge number of potential issues with app stores, payment providers, trust and safety... it's a problem area best suited for companies fully dedicated to creating a great experience there. I personally have very liberal views on these things, but supporting adult content as a business is very different.
What you're essentially saying is 'Adult content is hard because the US government is willing to lean on payment providers to enforce quasi-legal, anti-free speech policies.'
Have you considered adopting a federated corporate structure that would legally firewall off a "tumblr-for-porn"?
Most of the goodwill bonfire seems to have been caused not by Tumblr treating adult content differently, but by not even putting up a fight to provide a space for it.
Having a mirror world Tumblr that adult blogs could be kicked to would earn a lot of that back, while presumably amortizing platform development and ops over a larger userbase.
Surrendering because free speech is hard is never a good look.