My concern with Keybase isn't solely that updates have slowed down, it's that the app has been broken on Android 13 since it came out. Based on their github is

My concern with Keybase isn't solely that updates have slowed down, it's that the app has been broken on Android 13 since it came out. Based on their github issues and PRs, it looks like all they have to do to fix it is upgrade their version of react. The fact that they haven't done that yet is what tells me the app is dead.