They've got the SF Symbols font, and probably assumed that's enough. Everyone has the same set of icons available, technically.
It seems that Apple has nobody left who has all three at the same time: taste, attention to detail, and authority to demand fixes. Having lots of people who have max two out of these three gives you designs of Microsoft and Glass Apple.
It seems that Apple has nobody left who has all three at the same time: taste, attention to detail, and authority to demand fixes. Having lots of people who have max two out of these three gives you designs of Microsoft and Glass Apple.