Speaking as a fellow creator, yes the work is much higher but its really important to factor in the reader's point of view. All examples we've shown were problems we found A LOT on discover. Also, its 35 panels per week, not three weeks.
When it comes to the certain amount of panels, the contest has a minimum requirement depending on which genre you wish to participate.
Most Laughs has the shortest amount: 12+ per update
Most Gripping/Most Feels has the longest amount: 40+ per update
This reason for this is Pacing. Readers have a grasper understanding of the story when it is presented in a more fuller episode in comparison to updates that are cut off on a certain action, or emotional sequence. It's not so much about wanting more work out of creators, but about how to get the most out of their comic.
These were things I learned on the job as both an intern and a creator. Hope this helps.