I'm not going to defend Apple's huge price rises and failure to provide what a lot of professionals actually desire at this time, neither its embarassing failure to update its Pro desktop machine.
However credit is due for providing four, full bandwidth Thunderbolt 3 ports (on the 15" machines), for those professionals working with high-definition video this is important, just because you cant perceive why this would be useful to your work flow doesn't mean for some it won't be significant. Being able to hook up two 4K monitors (maybe 5k too!?) with USB 3 pass through and then also have ports available for full bandwidth transfer/management is possibly quite revolutionary for a few true pros.
For those of us who want to ingest some video/photo from SD cards, I guess it's a pain.
It's not like Apple invented a new connector here, it's clearly the future standard, if I was spending that sort of money on a new machine I'd probably accept a little bit of short term pain for long term benefit.
I'd like to see a model with six USB-Cs in the not too distant future.