No other company/CEO can make as grandiose announcements. Their future product pipeline is worth trillions and every year there's something else they will deliver very soon that will revolutionize the world. If you've read about it in a scifi book, Tesla will announce they are working on it first.
Yikes, yeah- on second thought it does seem sarcastic.
It's just so difficult to tell with Tesla because it certainly does have a certain portion of the population that would have posted the original comment entirely unironically.