“As of October 2020, 1.47% of Android devices run KitKat. As of August 2022, it is the oldest Android version still supported by Google Play Services and is currently the minimum version to develop apps for the Google Play Store.”

I remember KitKat being great because it was the version that introduced Chrome based WebView, which made a huge difference for compatibility if you needed it. However the WebView component only got auto-updating in Android 5.0, so security double sucks.

And KitKat was the version that there was an explosion of devices for - impressive that 4.4.4 is still supported nearly a decade later (albeit without OS security patches!) It was released when iOS7 was released with the iPhone 5.