And if they don't stock your configuration in store, there's no way to just hand you a new one either.
I'm not saying your experience was any less shitty than it was, but there's nothing else they could have done than what they did.
Unlike the earlier chiclet design they don't pop the keycaps off, they literally replace the top case.
If you're out of warranty this is a $500 repair.
You're shocked that a corporation lies?
This is in response to the GP's comment "They had the gall to tell me that since I didn't buy it directly from Apple, they wouldn't (not couldn't, wouldn't) repair it in store" - which isn't the case, this is the policy for the butterfly models.
For me, it has always fixed problems of keys that stopped working, but it doesn't seem to necessarily fix keys that double press. I assume that is related to an issue of the membrane itself or something under it.
iTunes. shudder
Joined a startup, raring to go, and they needed to get me a top-end MacBook Pro (16GB instead of 8GB as I recall). Apple stores in SF refused to stock the top-end, pointing me to their build-to-order options at the store. +5 days minimum.
Went with a mail-order house and next day aired in a top-end MacBook Pro laptop (which they had plenty of in every color). Shift key was DOA. Took it in to the Apple store. They had the gall to tell me that since I didn't buy it directly from Apple, they wouldn't (not couldn't, wouldn't) repair it in store, but would send it to their warranty center in Houston (right after Harvey). Got it back fixed, but so many days wasted.
Apple gets so many really difficult things right. Simple-seeming things like basic customer service and proactive quality control escape them.