imagine being someone that is just being quick, and everyone around you is inferring some motive like 'being cool', when really he isn't thinking of your perceptions at all.
Each to their own I guess. For me the attempted use of correct punctuation is a reassuring social norm. It reassures me that those entrusted with power are able to pay attention to details and conventions.
To put it another way, if we can’t trust these guys to even write a message properly, how can we trust them with the stewardship of the most advanced AI the world has ever seen?