Unifying to one standard port is kind of cool, except for the fact that not even Apple's other devices use that type of connection and users will have to buy dongles for almost everything. That represents a concrete step backwards in user experience.
There is a time to be bold and throw your weight behind a better standard, but there's also a time when doing so makes things inconvenient with little to no benefit.
That wouldn't be so bad if the Macbook were significantly more powerful but here we have a machine with the same max RAM as the Macbook they sold 4 years ago while PC laptops are shipping with 4 times as much.
It just seems like Apple is focusing on making a sleek and visually pleasing device, rather than a device that will be most useful to those who want to work on MacOS.