Can you explain how recovery method changes things when a warlock casts a pact magic spell instead of a sorcerer or warlock casting the exact same spell at the same slot level? Let's say it's a level 11 warlock with 3 fifth level slots to be immediately recovered in a couple more rounds after burning all three?Short rests mitigate novas. Because they refresh several times during the day, there are less resources at any one time. So the novas are less of a big deal.
By contrast, the long rests come with an enormous amount of resources that can be used all at once, even during a single encounter.
That claim seems flatly untrue to an extreme degree. Take that same level 11 party and look at the level 11 wizard who has one 6th level slot and 2 5th level slots for nova and does not recover them with that short rest fully resetting the warlock nova. Sure they have 4 first level & 3second/3third level slots but both characters are limited to casting a single spell per turn and we are explicitly talking about nova capability
It may be true that pi proves that we live in a non-euclidian reality but the math you are using for this claim seems to be more in the r'lyehthian style used by the elder gods.Short rests are better for game engine balance.
What incentive does that level 11 warlock have to press on rather than reset his nova pool alongside the fighter and monk doing the same with an immediate short rest?Narratively, there is more incentive to press on with hour rests, rather than 5-minute work day while waiting until after the next nights sleep.