Yea that sounds like addictive behavior to me. I guess guys like Elon are easily addicted to stuff, which makes them so passionate about work and Tesla is a clear result of that. On the flip side you have his Twitter addiction and whatever he pops in to "perform" and "calm down".
It's not unusual for people in important positions to be addicted to drugs either, cocaine, speed, sleeping pills. They think they work better under drugs, but take it too far and you think you can invade Russia in winter...
I personally don't care what Elon takes and what he doesn't take. We'll see how this Saudi take over plays out. I personally don't read his twitter anymore, it's become a lot less informative and a lot more weird. But that doesn't have to be drugs, maybe just how he thinks of himself has changed?
I sometimes wonder if Elon should take a break from Tesla and let J.B. Straubel take the wheel for a while. He seems really competent, too and he doesn't tweet all the time. I would really like it if we had less important people, that actively use twitter. Twitter is for C-list-celebrities, not (world) leaders.