I found this comment on another sie reportingthe same story:
All repairs and maint are done through a third party company, Jabil, in Renoysa, Mexico. They have a specific set of instructions that they follow assembly-line style, and one of the first steps in that is they scrub the unit down with rubbing alcohol and remove all stickers and so forth that are on it. Any letter with the console would have been disregarded since the workers don't speak English, and are much more concerned with keeping up with the mass amount of work to be done, because they can be fired very easily if they don't. Even in an unusual case like artwork and signatures, the workers have better job security just pushing it through like usual than stopping to ask.