Correct, companies dont make decisions based on single days, but when your run to the bottom is now on two years and below half your high, it certainly will.
Disney is in shambles. Marvel is no longer printing money, Star Wars is seen by fans as almost beyond repair, ESPN is a drain on the system and D+ is essentially a product with no reason to exist. The theme parks are really the only ray of sunshine and they have no real counter punch in the pipeline for the new Universal park. In that area, Mario and Potter have shown that they can play the same game as Disney, but faster and at more affordable prices.
You can play accounting tricks all you want, but at some point those outlays of cash need to be paid and income is expected. Are they in danger of bankruptcy? No. Are they in danger of losing their spot on top of the media world? Yes...they might have lost it already.
Iger was bad before, he is bad now. I dont think they have anybody to turn to inside the company, either. They have rot all the way down every division that would need to be cleaned out. Kennedy, Feige, D'Amaro...all of them have overseen, and hired their people into, massive nosedives in consumer sentiment and short term profit gains over long term growth and security. If Iger goes, the rest need to go, as well.