You say this like there's not much difference between the two, but there's a world of difference.
One is someone yanking a repo and breaking millions of builds across the world and the maintainers of npm stepping in to fix things (in a move that is still controversial, mind you).
The other is the maintainers of the WordPress plugin repository starting a self-described "nuclear war" with the plugin maintainers, banning them from the repo, publicly disclosing a security vulnerability in the plugin, then hijacking it to save the day.
One is a potentially misguided step to solve a real problem. What Matt is doing here is just cosplaying Syndrome from The Incredibles.