Ok, I guess I could have inferred your meaning from your original post, so sorry if my reply was too snarky. But seriously, if that's your point I would have just made it like this:

"Dude you're only supposed to use the phrase 'outside view' with regards to the planning fallacy, because we don't know if the technique generalizes well."

And then I'd go back and change "take a step back and look at it from the outside view" into "take a step back and look at it from an objective point of view" to prevent confusion, and upvote you for taking the time to correct my usage of the phrase.