I'm having a hard time parsing why he would post this. Did he think he'd get customers? I doubt it. Investors? They already raised hundreds of millions. To me

I'm having a hard time parsing why he would post this. Did he think he'd get customers? I doubt it. Investors? They already raised hundreds of millions. To me it seems like the only thing he's going to get out of this is twitter followers. But at what cost? Are twitter followers that valuable? Why do some CEOs spend so much time growing their twitter audiences? Do they do it for recruiting? Is this really the best way for them to spend their time? Or is it just an ego thing? Not being sarcastic, I'm genuinely curious.