DnD combat doesn't rely around a rogue sneaking around and stacking 5 barrels of explosives around all enemies. It's a neat trick for sure, but I feel that it's gimmicky and doesn't feel like DnD.
You don't need to do that to win encounters, neither in DOS nor in BG3. But you can if you want to.
In terms of environmental damage, I like it, particularly fire. It is present in older editions of DnD (at least 4e) and I believe Pathfinder?
I am really glad it is not in 5e because keeping track of it is a pain, but in BG3 the game does it for me, so that is great in my book.
