You can only walk down to your local Apple
Store and walk out with a replacement within 14 days, give or take as sometimes they will make an exception. Which is nice, but most companies give 30 days to begin with, Apple being among the minority who do not.
Beyond that, many repairs require a depot repair and will require the laptop to be sent off for several days. That’s not a great solution for something that should/could be as simple as a keyboard failure.
With Lenovo you obviously still have to wait for a replacement keyboard, that can be expedited overnight, so not a several days repair and you can still use the machine in the meantime while you wait for the part.
RAM or SSD you go to your local Microcenter
or take advantage of Amazon Prime or the like and have a replacement at your door next day.
Microsoft does a similar thing as Apple with everything soldered on as well, but they do allow one of their two incidents of Microsoft Complete (their Apple Care +) to be used to get a replacement machine. They charge less for extended warranty than Apple.
But the topic is really about the Gen. 3 keyboard and it reminds me a bit of that Animaniacs cartoon with the Good Idea / Bad Idea skit. Riveting in a keyboard with questionable reliability so that you can’t remove it without destroying it thereby necessitating a depot repair for a top case
replacement is a....
Lenovo Keyboard replacement ....
Apple butterfly keyboard removal (you can’t replace it)