Personal Shoppers

It’s interesting to hear the “I was only joking!” or “I didn’t mean it!” statements coming from celebrities who used “I’m going to move to Canada if Trump wins!” threats as emotional blackmail or emphasis on endorsements.
So, they make an emotional plea, back it up with a threat, and their word is worthless?
If a corporation sponsors their projects or hires this person as a spokesperson, how do they reconcile that this famous person’s words are spiteful and worthless?
I guess that says a lot about the value of product and service endorsements.
Celebrities are not your personal shoppers.