I don't understand this criticism. On every other laptop on the market today, if you want different ports you either buy dongles or buy a whole new laptop.
Every laptop I've ever owned has at least one port I never use, and after a couple years it's missing some other port I'd rather have. This one seems to solve that problem, extending the life of the machine and/or avoiding dongle hell.
If the value prop is that it's nice to move the port adapter dongle into the chassis rather than having one dangle from a port, so it's an ergonomic improvement you're sold on, sure. I'm not saying that can't have a market.
But if you can only buy the dongle from one vendor, it's going to be more expensive than if there's a market where multiple vendors compete. It's that "you can only buy the adapter from Apple, and it's really expensive" thing, just moved into the chassis.
Hence the question which one of those we're looking at here, and it was kindly answered by a rep above.
Well, sort of :-) Nespresso is a famous implementation of a "your basic machine stays static, you swap out a different element of the system based on temporary/current needs, but you can only buy those elements from one vendor" pattern. Printer ink cartridges are another.
Yeah, add-on cards to a computer aren't consumables per se - but the entire premise is that as time goes on you might want to get new ones (because your current needs change), i.e. upgrade. Whether I can pick upgrades from different vendors, and what the tax imposed on creating and/or selling upgrades is, matters.