Is this supposed to be tongue-in-cheek? Because if this is serious than I hope I will never have to work with this guy. It screams bro/hustle-culture with a side of vain elitism.

All of it reads so... arrogant? It's also just wrong. I'm no senior designer, but all of his points advocate for less communication and projecting absolute confidence in situations where it's not at all warranted. Preventing misunderstandings is only possible with more communication, not less. Instead of working with you this guy will just straight up choose what to do and if you disagree then you're wrong.