happyhermit
Adventurer
What I see is a whole thread of people giving me one of two answers: Either "high level play isn't viable in 5E" or "high level play is viable under the condition that you completely change the challenge ratings of the monsters". The "some people" who think it works just fine appear to be just you, and that I only have as a blanket statement like "everything in 5E is perfect, nothing to see here, move along", instead of any argument why you think that monsters as written being a pushover at high levels is working as intended.
Huh, I just re-read this thread and I still don't see that at all. I see a whole lot of people saying you need to adjust/customize things depending on the parties level of optimization/magic items/feats/strategy, and I see some people talking about strategy/tactics/planning on the NPC side of things. I don't see everybody saying that it is completely unviable without changing the CR of the monsters.
For the record I am part of the "some people" who think it works just fine (and that you don't need to completely change the challenge ratings, though you certainly might want to), but I certainly don't like the "everything in 5e is perfect" line, there are a lot of things in 5e that don't suit my preferences it just happens to accommodate them better than most other systems.