I agree. There's a fine balance for Larian to find here.
On the one hand, I don't want to be bogged down by trash fights, that provide no challenge whatsoever, and it's just a matter of going through the motion. Does anyone remember the random packs of gnolls or xvarts in the BG1 maps when you're level 3-5 ?
On the other hand, I don't want to get the feeling that every combat encounter is a set piece, a challenging puzzle to solve. It means that all fights are interesting, but it also means the game loses in credibility.
So, once in a while, I'd be happy to hack through easy encounters.
Perhaps some occasional random encounter when trying to rest would be a good occasion for this ? It would be an easy fight, but if we are caught without our spells and running low on health, there might be a bit of tension and it might still give us a bit of thrill.
It should also be that we have a couple of these easy fights in normal encounters. I don't like the feeling that the whole world is scaling with us. Like "hey, welcome to Act 2, now every enemy is level 4-6, because you are".