Because his arguments are against the fundamental structure of iOS rather than against the app store.
A second app store inside of the walled garden still ends up being a walled garden, just one with more of an illusion of choice. That means that the users will have even less reason to leave.
Hm, that's accelerationist logic, wanting iOS to collapse to opposing things that would improve iOS for real world users.
The downside is that if the brinkmanship fails and iOS doesn't collapse, then the primary outcome is just that iOS users are worse off for no obvious gain.
