It’s one thing for Apple to force all of its own app icons into the same identical shape. That would be bad enough, because Apple’s own Mac apps are numerous and popular, and as the platform owner Apple necessarily sets the direction that many third-party apps follow. But it’s just downright spiteful to enforce it platform-wide. Apple decided they’re no longer going to create nice icons with unique, interesting, and most importantly, distinctive shapes — but they’re no longer allow third-party apps to either. It’s like Apple decided every single one of its own apps must wear a stupid-looking hat, and they put those stupid-looking hats on third-party apps too, whether the developers of those apps want them or not. Scratch that. Not hats but helmets. The mandatory squircle makes identifying apps at a glance harder in the same way that it’s difficult to identify individual people if they’re all wearing same-shaped helmets. Real helmets at least serve an important safety purpose. The squircles are like stupid unnecessary helmets.
This is a great rant because it’s true. It used to be much easier for me to find apps in my Dock when they were allowed to have distinctive shapes — indeed when Apple’s own apps had distinctive shapes. All of Apple’s UI design changes in the past few years have imposed a greater cognitive burden on users: the entire experience has become less legible. Using a Mac used to be fun; now it’s unpaid labor.