You don't get to claim both ways. Either you expect people to prove why you are wrong and willing to do the same or you don't - in which case, you can't say "prove it".
However, with regard to the issue at hand...You are both actually right.
The fiscal actuals (ie. operating results) will not show any change until after the revenues (and lack of them, if the "I won't fly people" stand by their word) are reported.
The stock market, which is what many investors look at, looks at all known information about a product (in this case flying) and how any material changes will impact that. The stock price will be driven by all information out there.
so the way I read them is that you are both talking about different things, but both have points.