What makes you think he's changed his stripe? He's playing the game for good boy points.
My theory is most will go back to whence they came. Oldfag anons will go back to /b/ or /pol/ depending on personality and beliefs. Converted normies will most likely return to whatever social media survives. I see it as an opportunity to continue the online free speech battle. Hopefully the normies that have been awakened will spread anon values there.
That is a possibilty, but remember /b/ pre-2017 was about far more than just porn posts. Some of the greatest gags ever perpetrated online started with a couple of bored /b/tards.
/b/ sort of fell to the wayside after HWNDU. The first rule of the internet was broken by bloggers.