As a YC alum who worked with Gary Tan directly, this is… odd. Anyone who knows Gary knows he’s a (relatively) gentle human being. I can’t imagine him hurting a fly. His tweets seem totally out of character compared to the Gary Tan I personally knew. Maybe he has changed? I’m inclined to give him the benefit of the doubt.
A tweet is a thought with cheap delivery, therefore offers no insight at all. It's just like an anecdote from executive leadership to get something over the line to meet a goal. That person has absolutely forgot they said it the next day.
You can string tweets together or if you're a blue check you can just write a treatise, so you aren't really limited to 140/280 chars any longer.