That's not the only reason. With Apple's almost monomaniacal emphasis on making everything as thin as possible the USB-C ports keep the port from limiting the thickness of the device.

I started a new job recently and got a MBP and iPhone, and the number of dongles I've needed is ridiculous. What's most insane is that I can't even use the earbuds that came with the iPhone with the computer. I'm sure there's a dongle for that.

Then there's the fact that a few days after I started using the Mac the right ports stopped working with the power cord to charge the machine. I had to do research the find the secret keyboard combination to reset the USB ports.

Although Apple's products are generally very good, they have no lack of features and designs that make absolutely no sense to me.