Confused about the new discount system (Germany only?)

From what I’ve seen it doesn’t appear to be the best. There is a wider discussion about the new discount structure here: Discount structure - Huel. From the cost analysis @Patricius did at the end, (if these figures are still valid), it would be cheaper to now place 4 orders for 4 bags instead of 1 order of 16 bags. I don’t understand how that makes sense myself.