The phrase was "apple is hostile to this kind of effort". "This kind of effort" is, I suppose, running non-official software on Apple hardware in general.

iOS and the third-party app store court battles makes it clear to me that Apple is actively hostile here.

It would have taken less work for apple to implement the EU "third-party app store" regulation as "anyone can install a 3rd party app store if they jump through enough hoops". They instead require that you live in the EU, as verified through many factors. They break it if you take too long of a vacation, they make using your new right to install a 3rd party app store as difficult as they can.

Apple clearly does not value user freedom nor users abilities to install their own software on their own devices. Apple would rather old iPhones and iPods become useless e-waste bricks than release an EoL update to unlock the bootloader and let you install linux to turn that old iPod touch into a garage remote, or photo-frame, or whatever.