Comment by jakub_g

A potential problem I see with "LLM=true" being set by claude and friends is that some tools whose authors don't like LLMs might be tempted to e.g. don't output anything at all (and don't do what the CLI is supposed to do), out of principle, when they detect LLM is running things.

Just the (small) probability of this being true might be enough for the big players to not consider creating that var. (Although, if it's easy enough to unset it, then maybe not an issue).