They're asking for feedback on what they hand us, not on all of the possible variations of what this game could potentially exist in different parts of the multiverse. All I can do is tell them what's good and what's bad about what they have released. So, yes, I'm pointing out a way in which this game consistently falls on its face. It's up to them what they do with that information.
I make no assumptions about what they are going to do in the future. You seem to be suggestion that I should assume that they are going know exactly what I want and are going to implement it in a way that I'm going to find satisfying, and so I'm being silly for giving them the feedback that they have asked for.
100% yes.
For all we know, Larian had "figure out rest mechanism" on their to-do list since before the release of the EA version. So our feedback on this issue might be completely useless : possibly, they knew about how problematic it is not to have a proper rest system before players even experienced it.
Larian didn't communicate and give us a game with EA/playtesting labels, like "this mechanism isn't implemented yet". They have put everything on the same footing. So players should comment on everything and criticise equally all things that don't work.
I could censor myself, thinking "this particular issue is so blatant to me, surely Larian will work on it, there is no need to report it". But that would run the risk of them not having seen that issue at all. And as far as mechanisms are concerned, so far, I have not been given reasons to have a blind faith in the fact that Larian will get things right.
Thus, players should keep doing what we've been doing : give feedback on everything, without assuming that Larian has in mind.