The cost of small (128x32) OLED displays with integrated drivers has absolutely plummeted in recent years. They are now cheaper than 7 segments unless you only

The cost of small (128x32) OLED displays with integrated drivers has absolutely plummeted in recent years. They are now cheaper than 7 segments unless you only have 2 digits to display. On top of that the oled display modules are typically 2 wire serial or something similarly economical, while 7 segments require more connections and external components. It's hard to imagine them coming back in small devices.