Because I care about those MacBook users with their butterfly keyboard not working as expected, here is something that may help. Introducing Unshaky. This could be a fix for MacBook butterfly keyboard issues. As described:
Unshaky tries to address an issue on the butterfly keyboard (Macbook & MacBook Pro 2016 or later): Double Key Press
So don’t expect to fix keys that don’t register at all. Also, beware: this utility required elevated access in order to work. This could pose a security and privacy issue.