Me too, and they say it will be over $500 to fix as they need a whole new casing
I've killed a few keyboards on older Thinkpads. The replacement part was maybe $50 new, and considerably less for a used one on Ebay. It's not integrated with any other component and can be changed in 10 minutes with only a Phillips screwdriver.
I'm sure integrating the keyboard with the expensive machined aluminum upper case, trackpad and whatever else is built into that component resulted in a laptop that's 1mm thinner.
Never again.
Interestingly, when I searched for that number, I learned Twitter OCRs images you post: https://www.google.com/search?q=605-02931+macbook