Having returned my 2018 "improved butterfly keyboard" MBA because the keyboard died after 3 weeks, I suspect that the issue isn't being taken seriously. A minor design revision that didn't pick up or resolve a recurring issue is a death march for a product.
Okay, but on the flip side I used the 2017 MBP for a year with no problems whatsoever. It's hard to figure out realistically how much of a problem this is for them.