Except they they didn't, because there is not ruleset that would limit access to stash. Imagenening the game does something is not the same as the game doing something. Self-imposed rules are just that.
I have no idea what are you talking about. O_o
What for would you need anyhow limit access to stash? O_o
Adding what OP suggests (long rest UI taking into account food in the stash) would not inflence self imposed limitations that you suggest.
Wich sounds to me like strong indicator that you connected unrelated dots. :-/
We were talking about "send to camp" feature ...