Hmm, while looting i usally struggle with many different items, instead of stacksizes. And depending on my game progression i usually drop bioled water, murky water end empty jars to free up slots. From one point in the game i have enough water and jars, so why carry around them to get even more of what i don't need anyway?
When it comes to base inventory managment, stacksizes become more an issue. However i realized if stacksizes kick in, i usually have enough of that item anyway. When my base storge shows i'm starting the 5th 250 stack of feathers i usually sell or drop them. (or i craft and fill my arrow stacks and sell the rest). Doesn't give you much dukes, but at least a little and frees up storage room.
Items i will keep multiple full stacks, like e.g. first aid kits or especially ammunition, are really important and worth their storage use even with the given stacksizes.
Imho from that point of view that is not just inventory managment, that is what to keep and what to drop. Or build many storages and deal with them. That's also "survival".
Some stacksizes may be worth discussing them. But especially for boiled water, imho there is no problem. You don't need hundrets of them in advance, jars are easy to craft (if you don't have enough in storage already anyway), murky water is accessible easily and you can craft boiled water very quickly, when you need some. For drinking i go to tea as soon as i can anyway. They have the same stacksizes, but i don't need 100 of them on storage either.
If you live in the dessert and there is really no source of water or a water tower nearby, you have choosen to play in that environment, and it's common that water is rare there. So their storage use becomes important again but worth it.
(And if you choose so, got to snow biome once, dig a full stack of snowballs (iirc 6000?), go back and have a lifetime supply of water just costing one storage slot)
BTW: iirc stack size for boiled water was already at 10, at least in A18.