I dare to say that this market change works both ways. Software is now created by people who have little idea about UI concepts, or even who don't want to bother themselves with these. Because the dominant type of a device is no longer a desktop computer. This isn't about strictly Apple as other companies also create, or allow to exist "awful" interfaces with no substance.

Is it a bad thing? Not necessary. Smartphones revolution made Internet truly accessible to everyone by cost of dumbing down software by features and UI - turning effectively these devices to work like any other home appliance. Software today has to have that captivating appearance so user wouldn't be scared away. But nothing is perfect and there are examples where users are being treated with this nasty infantile approach by literally showing confetti and balloons as the satisfaction derived from interaction.

The peak was flat style which not only introduced maximum simplified interfaces, design but also provided grounds for all sorts of darkpatterns where content is indistinguishable from active element. That let companies manipulate the user's informed choice.