Moto X (2013) was the device I intended to describe. You are right on both counts. I think I conflated the second gen closure of the US-based plant with the acquisition in my memory. And I'm now remembering that the real reason I was so disappointed is that the Moto X (2013) was a phone that you could operate the entirety of the screen one handed. With the Moto X (2014) you could not.

I have an iPhone mini now, but it's still not small enough to 100% operate one-handed, at least not without grip adjustments. The Moto X wasn't quite a flagship phone, but it came close enough. I can't even find a properly one-handed phone anymore