Maybe checkbox can be returned next to the boolean state values?

[inoyakaigor]

The checkbox was very convenient for switching the boolean variable value

[bvaughn]

This was intentionally changed as part of props/state editing interface overhaul in #16700 to enable changing the type of prop values. (This was requested a lot before.) There are no plans to change it back.

React DevTools is trying to mimic prior art from built-in browser devtools UI: