Ingratitude? How grateful am I supposed to be for the fact that they get some product here faster than competitors? I'll take a slightly slower world with fewer assholes, thank you very much. The world is still going to change without them.
Tesla's worth as a publicly traded company is not determined by "the world", but rather by the tiny percentage of people who trade stocks - and even then mostly large investors, not individuals. So it's not exactly representative of the society, either.
You will now see "psychiatrists", "judges", "moral priests", condemning Elon's behavior. They are mostly driven by envy and greed.
Elon is a driven person that can be temperamental when things don't get done. If that's not your style you don't have to work with him. He didn't cross any lines and at the end his company has been extremely successful to everybody's benefit.
If I had to summarize the internet in one feeling, that would be jealousy