You should be able to hold down the button to release crates. saves constant clicking/pressing. maybe it drops at a slow speed and the longer you hold it reaches a certain speed that would overtake manually tapping for people who want to drop lots at once. for example my daily quota is 360 but i have over 7000 crates so this would speed it up.

Likewise if i only had the max 40 it would speed up the time taken to drop them all.