VW has talked a lot about the ID.4 being a gateway for ICE drivers to the EV world. Because of this I suspect they tried to make the ID.4 as "normal" as possible while still signifying that something interesting is about, and I think this comes down to function, too. For those new to EV's, driving the ID.4 will largely be just like driving a similar ICE vehicle. I mean, we're talking about the most competitive segment of vehicles in the U.S. and many other countries. So having to hit the brake pedal to slow or stop the ID.4 is super intuitive to people who have been doing just that since learning to drive. Having the ID.4 coast when lifting off the accelerator pedal is expected behavior coming from an ICE.
The only thing I wish VW did differently was not having a setting to enable one-pedal driving. Driving our i3 for years, I quite liked the one-pedal driving (except in traffic when it would've been nice to have the car coast without me having to maintain pressure on the accelerator pedal). My husband, on the other hand, didn't like it and wished it would just coast. To quote him, "if I want to stop I'll hit the brake pedal like every other car." No joke, his words. He of course became accustomed to the i3's one-pedal driving, but he still preferred it didn't have it.
All of that said, the lack of one-pedal driving in the ID.4 is not a deal breaker for me, not in the least. In fact, I'm intrigued by the "intelligent regen" or whatever VW is calling it that occurs in D mode.