On top of this I find it weird that people say they have to carry 20 Apple branded dongles. Depending on your use-case there is already type-c usb hubs with HDMI Ports, or Ethernet Ports, or both.[1]
The thing is, I love the USB-C TB3 Ports and I love Apple's decision to drag the industry kicking and screaming into a reality where an Office can have a Monitor that is a Thunderbolt 3 Hub, connected with Ethernet and peripherals, that work with both Windows and Mac. This will revolutionize flex-desk setups for big organizations and Co-Workingspaces everywhere. Imo it's worth to have this transition period where people drag a dongle with them to achieve this.
[1] https://www.amazon.com/Resolution-Aluminum-MacBook-ChromeBoo...
Belkin, Elgato, OWC and others sell them. I use the Belkin one and it works great.
But assuming you're a professional, you either already have a bluetooth mouse/trackpad or you'll want some quality and order a mouse from a reputable brand.
So I have to admit it's indeed very, very slim pickings.
I don't think this is going to be as big a deal as people say. Honestly, the biggest beef I have is removing the SD card slot, because I do a lot of photo/video work.
I think it depends on the type of user you are. If you're a true "mobile user", it's probably not a big deal, because you put a value on mobility over other stuff.
If you treat your laptop as a "portable desktop", it can get annoying. The ability to not have dongles for everything is one less thing to think about. Yes, it's not the end of the world to have dongles, but if you're used to not needing dongles, being forced to use them is going to make you unhappy.