There is a difference between regularly resting before hard combat encounters (and to progress the game)... and resting because that one character once again ran out of spell slots well before everyone else. It annoys me to no end. Even worse in the early game when level 2 spell slots are somewhat precious. I'd rather have characters that are actually good at each of their niches and reserve enhance ability for important checks. Saves me hours of backtracking by the time I'm done with a playthrough.
What you describe was not my experience in BG3; there are simply too many scrolls and potions available even on early levels for spell slots to matter all that much. And even for a utility character, I'd take a warlock/bard over a rogue, since you get both the spell and expertise, and eldritch blast to spam for the cost of one level. Though I prefer two levels of warlock for the invocations.
What I have run into in BG3 on the other hand is companion cut scene weirdness. Because it is not a game that rewards limited resting. And I think it can be difficult to tell, on a first playthrough, when exactly you have to hit that camp rest button to progress their stories.
