Mike Wuerthele writing for AppleInsider:

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 question anyone’s ability to gather this information, but AppleInsider gets pretty specific here with its numbers, and explains how it gathered the data. I have the 2017 model, and do hold my breath with the keyboard. Of course, my biggest gripe isn’t with the keyboard (maybe because mine hasn’t failed yet).