wow, too stupid to operate a coffee grinder and blame it on the grinders’ design, lol.
So, i try to give some info.
The opening could be bigger, but the deva comes with a shovel that feeds the beans very well.
Then, the design of the grinder is described this way: “Our patent pending design creates a small pressure difference between the burr chamber and the exit chute, encouraging air flow through the grind path to help the pursuit of zero retention.”
That makes all grounds fall out of the funnel after grinding. No bellows needed. That is explained on the Deva page. You can also see it in the video
Absolutely insane to see that as a con against the grinder. I absolutely love it. It is the cleanest grinder i have ever used.
If you do not want it, i would take it as a friend of mine wants one badly after having used mine.