Actually, maybe it's more the fact that at a prominent tech company:
* zsh is the default shell on a large proportion of servers that have read-only /home, so you can't easily change to your preferred shell
* a training guide that many new developers follows states incorrectly that:
> If you are using Bash and you have the option of using ZSH, you should switch to it. ZSH has additional auto-complete and history features that Bash doesn’t have (but don't worry - those features will not be relevant to this tutorial.)
oh-my-zsh seems to be recommended by a lot of developers in this company, even though:
* the default mechanism to install is curl|sh (there is no Homebrew package) on developer machines which have privileged access to a lot of resources
* installing it via its recommended installation procedure on dev machines would violate company policies, whereas installing bash-completion wouldn't
As does bash-completion, which is available in many (but not all :-/) Linux distros and via Homebrew on MacOS and [pre-dates](https://github.com/scop/bash-completion/tree/09b07d57a7031d9...) [oh-my-zsh](https://github.com/ohmyzsh/ohmyzsh/tree/5da20b9dddb1f7a91106...) by about 6 years.
But, zsh users and oh-my-zsh fan-boys seem to be entirely ignorant of bash-completion.