This 30+ year linux user says you never have 2 or 3 different incompatible bash's.

You can have multiple different sh's, but you have to go out of your way to force them to be used. And evenn if you did, dash and ash and older versions of bash and sysv sh are a strict totally compatible subset of latest bash, and none ever has the problem of incompatible or missing modules or plugin library. Old scripts work in new bash.

The python to powershell comparison was valid. This false equivalence was not.

The fact that you can have 2 window managers is like having 2 mp3 players. It's not the critique at all.