Okay, after some more playtime with this system in place, maybe it’s not as bugged as it first seems.
Stuff still keeps freezing/unfreezing, but you just need to make sure you have access to a fire or a good supply of headpacks.
In my current game, I was lucky in that I started with several military crates nearby, and they had some MREs in them. There was also a mess-kit in the farmhouse where I began.
Winters are going to be hellish though, so I’ll have to prepare well… 