Was the 6S the peak iPhone?

It was a warm summer night in September 2017 when Mashable asked itself: Has Apple innovation stalled? Do these glitzy new Apple phones (back then, that was the iPhone 8 and 8 Plus, as well as the then-upcoming iPhone X) carry their weight, or did iPhone evolution end with the most perfect phone that came out two years earlier? In short, we asked ourselves: Was the iPhone 6S the last of the great iPhones? First, a little context. I didn't write the article; I'm way too enamored with the next new thing to look back in such a way. It was written by my former colleague Foster Kamer. Ever the new phone skeptic, Kamer argued that the iPhone 6S, then two generations old, was the perfect iPhone; one that's fast enough, perfectly sized, light, and equipped both with a headphone jack (remember those) and an actual Touch ID button, which was later replaced with a faux button and, ultimately, with Face ID. The article goes into quite a bit of detail, but ultimately it's not just about the iPhone 6S or any particular iPhone; it's also about how the best iPhone purchase is almost always one that's one or two generations old. Because, you know, it's just so much cheaper. This is where I'm willin