I'm pretty sad about this all-around.
For whatever it's worth, I actually think this dev is understating the impact of their security issues. They had 2 token leaks - albeit conditional and with prerequisites. Given the sorts of tokens that a user has to supply to use this sort of generic app builder, this is pretty serious.
That said, I think inconsistent enforcement, when it favors them, is a really bad look on Discord. It totally looks like they're doing cover-their-ass, whack-a-mole, public relations-driven enforcement.