Lots of the Apple walled garden stuff is certainly not about security but about artificially limiting competition. And I am sure you can continue to use e.g. Ap

Lots of the Apple walled garden stuff is certainly not about security but about artificially limiting competition. And I am sure you can continue to use e.g. Apple Safari browser. But people who want to use the device they already paid for to its full capability without artificial after-market limitations should be able to do so.