Your 2 MBP's fall outside of the issue so I imagine you haven't had this problem. Your anecdote doesn't provide a counter to the claims of sticky 2016 and 2017 butterfly keyboards. If anything, it's anecdotal evidence that the previous keys provide superior reliability.
Yep, their older keyboards, from, say, the first unibody MBP up until just before the recent travesty keyboards, were a thing of beauty - unbelievably rigid, nice travel, great feel, super reliable, a joy to type on. But, as everybody knows, the primary requirement of all Apple devices (except the Watch) is that they get thinner, and the previous keyboard was standing in the way of progress on this vital quest. So they developed a new keyboard which is, indeed, thinner, and has reduced key travel down so far it's harder to type on, can be stopped dead in its tracks by a speck of dust, and
works up to one-third of the time. Hooray!
I hear the newest iterations of the travesty keyboard are getting better, but that's a pretty low bar to get over. And on a laptop, this is pretty inexcusable - if it were the keyboard for a desktop system, you could simply choose another, but a laptop's keyboard is its primary input device and can't be swapped for another brand by the user. A laptop you can't type on is not functional.
Removing floppy drives and serial/parallel ports was a good thing, even though there was much wailing and gnashing of teeth at the time. One can even argue that there was sufficient justification for, say, getting rid of the 3.5mm headphone jack (opinions vary, of course, but they can argue it). But with the keyboard, they've made the primary input device
worse is most respects, and apparently all in the name of making thinner laptops. The MacBook Pro doesn't
need to be any thinner! Sigh.
(And the TouchBar is cute, but they did away with the physical Escape key, which, as a Vim user, I need approximately seven thousand times a day, taking away all tactile feedback - can't tell with certainty that you've pressed it without looking at your hands because it isn't separate and doesn't press, you can't rest your finger on it waiting to press it at the right moment, and just for fun, from what I've seen it isn't the very end of the bar, there's a little dead area at the end that doesn't count, to make it even harder to press by feel. If they'd made the TouchBar with a TouchID sensor at one end and a real, separate Escape key at the other, it would have been completely fine, but it would have caused Jony Ive great pain in its lack of complete symmetry. Apple's trying to chase away another segment of its userbase, but nobody else makes comparably great Unix laptops.)