Being able to rest anywhere - as often as you want - sucks tension out of the game. Risk free resting everywhere is also something that earlier BG games didn't have, and means that you needed to..you know...plan things. And not just spam all your most potent abilities. Not having it, even on Tactician, is not really defensible. A well designed game and encounter sequence pushes you hard enough so that you can *just* make it, if you manage your resources - I never felt threatened in BG3. And adding things like those angelic potions - that mean even when you can't rest...you *can* actually rest - is another poor design choice.
