Sorry, I'll try again.I’m sorry, but I don’t understand the question.
Am I correct about the following two things?
1) Supply represents both food and water together.
And
2) The goal of the supply system is to allow for resource management in exploration that is: consequential, easy to track, allows some skills and class abilities to shine, and isn't easily beaten with spells.
If so, then:
A) Should create water never have made supply since supply is both food and water?
B) What is the point of create water making non-potable water, and purify food and drink not working on created water if supply needs both food and water anyway? Is it to stop debates about whether supply gathering could take less time/supply could weigh less if they used magic for the water?
If I'm substantially right on all of those, then:
C) Does using RAW supply mean that poking a hole in water skins in a drought stricken wasteland or water barrels at sea is just as effective a sabotage in A5e as it would be in real life, even if the party's caster had create water and purify food and drink? (Since the party would have no way of supplementing the food with water).
I think my problem is that feels like a really strange outcome to me, that in spite of the water making/purifying caster and piles of food, the party is doomed. Is that outcome just part of the price for the simplicity of the raw system?