Surely you mean "Some arbitrary fantasy number got down by 4.6 somethings", right?
If the numbers would reflect the actual value of physical stuff, then i would agree with your first premise. But that's not how it seems to work. I can open up a shop, put 100k into it, and then issue 1000 shares at 100 bucks each. Overnight some drug addled wallstreet bozo goes on a frenzy, and suddenly each share is "worth" 200 bucks. But i still have the same stuff, nothing changed. The extra 100k are virtual, non-existant in the real world.
It's true, that number is fantasy and highly emotional, it's all a greed-panic mechanism behind it.
It doesn't affect the backend of a company directly, but in highly mediatised companies/products like this it's mainly about the frontend.
If for whatever reason the stock value goes to his "real" value, the product will be seen for it's "real" value also, witch means, a 2-tonne vehicle on batteries, like we also had in the sixties. And some batteries acting as storage or UPS, that also existed with vacuum tubes.
Investors, media, goverment money will all go away, that's what's all about, this is their highest concern.