The internet connection doesn't have to be on the UAS itself, it can be through a paired smartphone or something. Also if the UAS has a radio then it only needs to connect to the internet once at the beginning of the flight.
There are concerns about overwhelming the ADS-B spectrum with a bunch of drones. It's not ruled out entirely--there are exceptions--but they want to avoid a whole bunch of drones using it, yes.
All the outrage on here seems shortsighted, while the FAA and you are recognizing the long game.
There's no putting the genie back in the bottle, so any proposal needs to scale across the widest range of UAS, while coping with potentially exponential vehicle count growth, while avoiding adverse impacts to any legacy systems (existing ATC instruments or RF networks).
That's no trivial circle to square.
By offloading performance demands onto clearing houses, they gain scalability. By avoiding existing devices, they avoid negatively impacting legacy traffic.
I'd imagine existing flight instruments wouldn't be too happy if I 100x'd the amount of data they're receiving (assuming the spectrum would even support it).
So yes, additional requirements, but that's how you get to a world where there are safely 1000s of drones in any given airspace.
There are concerns about overwhelming the ADS-B spectrum with a bunch of drones. It's not ruled out entirely--there are exceptions--but they want to avoid a whole bunch of drones using it, yes.