From the Polygon article:
"C04 knows what she's doing."
"B06, what are you doing? Oh my god no ... no! What are you doing?!"
"Don't go over there! Yes, keep doing that! That's what that blip means."
"Just turn to the left! To the left! To the left! ... or just fall off that cliff."
This is how we get maps like Zealot with space - 3 of 4 people testing don't have thumbs and can't possibly break the map - they can't even turn left.
A quote of Josh Holmes:
"I think for Halo in particular, because there's a competitive aspect to it in multiplayer, it's really important to us to keep that consistency," he says. "So players can learn a skill, pick it up, and know that they can apply that skill without the game sort of overriding their expectation. And so philosophically, that is something that we really held very dear."
But... but... there are auto pick-up flags that I can't put down.
Tongue in cheek salt aside... I actually really enjoyed the article. Would read more from them.