Mike Wuerthele, writing for AppleInsider:

Following anecdotal reports of a keyboard more prone to failure than in previous years, AppleInsider has collected service data for the first year of release of the 2014, 2015, and 2016 MacBook Pros, with an additional slightly shorter data set for the 2017 model year given that it hasn’t been available for a year yet.

Not including any Touch Bar failures, the 2016 MacBook Pro keyboard is failing twice as often in the first year of use as the 2014 or 2015 MacBook Pro models, and the 2017 is better, but not by a lot.

I have had an issue with my 2016 13” MacBook Pro, which is described by Apple as a “popping sound”. I contacted Apple Support and sent them a video, and they immediately set up an appointment with my closest AASP to fix the issue. They fixed it in 24 hours by replacing the whole top case, which includes the keyboard, battery, and speakers. The “popping sound” happens when the keyboard gets too warm and some keys start making a different sound. They also feel marginally stickier when pressed.

The new keyboard feels and sounds different — it’s quieter and a bit stiffer. I’m not sure if this is the same one as in the 2017 model, but I hope it stays fixed. Since this is a problem with the design and the fix is very expensive, I expect Apple to support their users indefinitely (or at least 5-6 years) — we already paid a lot for the MacBook Pro and we should not pay more for design mistakes.

Despite this being a frustrating issue, Apple Support and my AASP were stellar in helping me out.