I call this (well, in my head) the Sam Altman Fellow Kids style. It's clearly a deliberate affectation that they're putting on because other words are properly

I call this (well, in my head) the Sam Altman Fellow Kids style. It's clearly a deliberate affectation that they're putting on because other words are properly capitalise (COVID, PIP, I, his own name, etc.). The author's other posts are properly formatted so I assume this was a a stylistic choice they made to illustrate their point on it being stream-of-consciousness. I just find it more annoying on tweets because they've clearly fought the phone keyboard to override autocaps just to sound down with their fellow kids.