I can never watch this whole video, gives me ptsd every time.
Used to work with one of those project manager types, and when we got out of the meeting afterward, and I'd tell him what we just promised was impossible.
He'd just tell me to just "draw 2 red lines" which was all they really wanted and they'd never notice the rest of the stuff wasn't there.
He was usually right, but it was still stressful, the wilfully ignorance