Some of it is. But phone chassis have slowly creeped up since 2012 or so, a few mm per year, to the point where there really aren't any phones in the small category any more. IMO the Nexus 5 is larger than I'd like -- something the size of the Nexus 5 screen is closer to ideal. I've been using the iPhone SE 2016 for years now, hoping for a worthy successor, and the situation has only gotten worse for many years running now. The Pixel 4a was the last phone that came even close to meeting my requirements (one-handable, fingerprint sensor, headphone jack), and it's going to run out of security updates next year.