I sure wish I could join you in the year 2030 where USB-C is everywhere, but unfortunately I’m stuck here in 2019 and USB-A is still the de-facto standard on just about everything.
It’s nice to design a product to be forward-looking and adopting standards early when it’s foreseeable that they will soon become big. Like the Mac mini 2018, with its 4x USB-C and 2x USB-A. Got the future ports, but also the still-current ports. Awesome! But designing a product with USB-C only, for a future that is many years away, is pretty stupid, it just makes the product inferior and inconvenient in the here-and-now.