These comments are based on a few years of experience working with WSL. It's based on this tutorial:
https://blog.ropnop.com/configuring-a-pretty-and-usable-terminal-emulator-for-wsl/
And are basically updates to make it more relevant.
In the past, to make the WSL run a command from cmd or somewhere else, you had to run the bash.exe program from windows, which fired up bash (and always bash) in the WSL and made it execute a command.