It's pretty clear that the base 5e D&D game is not a survival game. 5e D&D doesn't really care about survival. As
@Hussar and you both say, the game gives players so many ways to bypass survival that it never becomes an issue. There are other d20 fantasy adventure games that DO care about survival. These other games care about torches, food, supplies, foraging, repairing equipment, gear, journey time, health condition and recovery, weather and road conditions, encumbrance, square/hex/point-crawling, etc.
5e D&D mostly cares about your characters having cool abilities and looking cool while doing them. If these things are there in 5e, it's mostly as a result of legacy and tradition, but it's vestigial. It's mostly there for show but left untouched by many tables. I believe that Matt Collville made a similar point in one of their past videos.