I said a little further in my original post that if they made short rests required and attached camp supply cost to them that Larian could then attach companion cutscenes to short rests and long rests. So each day you'd get 3 companion cutscenes instead of just the 1.
So we would be reaching our camp for every rest, no matter if long or short? :-/
I dont like that honestly, not even a little bit.
The end goal is to punish the players that abuse long rests, if they long rest after every single fight they'll run out of supplies super quick, and potentially feel like their time is being wasted and game experience interrupted by all the companion cutscenes.
I dont even understand why do you care.

So there are people who are resting after each fight ... so what?

This would encourage them to play more realistically. This turns the short rest button from a free 50% group wide heal into an actual rest where you'd done some hard combat, had the post combat dialogue, take a short rest and get some more companion interaction, then repeat.
The only thing you change is that you will consume part of your rations during short rest ...
If you would simply raise amount of food needed for Long rest, while keeping short rest free ... the outome will be exactly the same.

Since Larian presented us Minicamps, we know (or we should know) that to make all cutscenes work there was a lot of additional work ...
Therefore we can presume that they cant play anywhere ... therefore we would need to return to camp ...
So your only outcome would be making Short rests almost as anoying as Long Rests are right now. :-/
Also i dont quite see the reason behing conditioning Long Rest by Short Rest deplenished ... if my cleric, my wizard and my sorcerer all have zero Spell Slots, its reasonable for me to go to Long rest ... why would i need to make another two Short Rests that gives me nothing AND costs me additinal supplies? O_o
(those problems being long rest abusers, companion story progression tied to long rest thus resulting in encouraging long rest abusing or punishment by reduction in story content, and the overabundance of food/rest capacity leading to a lack in tactical overall adventure decisions)
- Long rest "absuers" > I dont see why people care ... you rest once per five hours, i will rest once per five minutes ... none of that what any of us is doing have any effect on the other one ...
- Companion Story progression > This was allready resolved by suggestion that was given in the past ... i wonder why Larian didnt implement it yet ... 2 Simple things ...
1) Allow companions to say "we need to talk next time we will be in our camp" ...
2) Allow conversation to happen anytime in camp ... meaning not just at evening, but every time you enter the camp ...
And voila.

Companion asks you to talk > you go talk > you return to your andventure ...
- Amount of food in game is irellevant ...
For one, nothing is forcing you to gather it all ...
For two, nothing is forcing you to use it even if you gather it ... there are camp suplies ... and if
Maximuuus suggestion will get green (and i hope it will, since i like that MUCH more), you will be able (if you toggle that option) to only use them, and you will need to act quite strategicaly, since their amount would be seriously reduced. :P