D&D (2024) Exhaustion

[Bill Zebub]

Yeah, but it's illustrative of the issue. Once you have at least one source of advantage and one source of disadvantage in play, adding more of either does nothing - so too much proliferation of sources of advantage and disadvantage makes the system break down.

No, I disagree here. In general I don’t think it’s a problem that sources of advantage and disadvantage cancel out, even if there’s more of one than the other. It’s one of those abstractions that some people feel don’t model reality in sufficient detail, but this one doesn’t (usually) cause paradoxes.

What’s weird in this particular case (e.g. fog cloud) is that it’s the same effect canceling itself, because of the way the rules about seeing and being seen are written.