That is pretty much exactly the same thing as seeing a character wearing a T-Shirt in a movie and trying to argue it must have just been what the actor came on to the set wearing that day.

In a behaviorial finance class I took we learned about a few hedge funds that followed CEO's during the 90's, and shorted their companies whenever the CEO underwent plastic surgery. Turns out that personal appearance insecurity of the CEO was inversely correlated to company performance.

From Steve Job's turtleneck to Zuck's zip-up hoodie, CEO appearance is a market signal that some speculators choose to use.

You're wrong on this, and the parent poster is right.

Execs in his position have style consultants on retainer.