A wide container allows for the water spray to hit the beans evenly, and the spout helps funnel them into the narrower opening of the grinder after having sprayed the beans.
That’s just to pour them into a quite narrow funnel, not all grinders have a large volume. Take the Hario for example, the opening is just about 1 inch wide:
I’m binge watching James Hoffmann. Easy ¯\_(ツ)_/¯
I shall ask you a question then o’ wise sage: what possible advantage could there be to this thing being shaped like a damn bedpan???
A wide container allows for the water spray to hit the beans evenly, and the spout helps funnel them into the narrower opening of the grinder after having sprayed the beans.
That’s just to pour them into a quite narrow funnel, not all grinders have a large volume. Take the Hario for example, the opening is just about 1 inch wide:
https://global.hario.com/product/coffee/grinder/MSS.html