So the 100k MRI machine you just bought needs to be trashed to get one with USB-C sure... Nope!
An MRI costs a lot more than that, as does most medical imaging equipment.
More importantly, equipment like that will typically be in service a lonnnnng time. If you want 10-year old specialty equipment driving new laptop design, I imagine you are in the minority.
Yes! Its still faster than WiFi and its private! In some environments Bluetooth and WiFi are just not possible or allowed.
Someone already pointed out that you can hardwire your network via USB-C just fine, but again, just because there are special situations where there is no wireless due to security etc, that small subset of use cases shouldn’t govern the ports on a mass-market laptop.
By the way, I’m not sure I’ve seen this ever come up, but at some point MagSafe is just not practical. Apple is driving towards <2 lb laptops. They are becoming so light, that the breakaway force on a magnetic connector would have to be trivial to work like it used to. You can almost pick up a current MacBook using just the clamping force within a USB-C socket. What good is a breakaway cable when a gust of wind will blow your featherweight laptop off the work surface?