This has been a long standing standard operating procedure at Apple. I had MacBook Pros with a ghost image problem due to defective retina screens, then the dreaded “stain damage” on the screen and now a new MacBook Pro like yours with a defective keyboard, which also affects the regular MacBooks.
This has been going on for years, they routinely pump out hardware with wide spread manufacturing defects and then deny it. It’s truly awful.
“Stain damage”, 100 pages of comments: https://discussions.apple.com/thread/6068947?tstart=0
Many stuck key problems: https://discussions.apple.com/thread/7226190
They tried to claim that one was “normal for this screen” and “within spec” — how outrageous on a product they market to professional photographers and graphic designers among others.
Horrible, horrible company.