short rests are basically "not combat" anyway.

So when youre not in combat or chaining encounters in dungeons, youll have a "short rest"
Given that long rests appear to be very systemic, by which i mean you enter some camp miniature map and have convesations and all that, having a seperat ething for short rests would look odd.

i certainly hope however that long rests require some effort, or can have random encounters or somehting along those lines.

DnD like games get ruined hard by making resting too easy and by making you be able to do it frequently.
DnD isnt Original Sin, encounters are not meant to be always tackled with full resources (for better or worse), you are meant to waste your resources.

if you dont do this, wizards will be hillariously overpowered