Zsh has a few nasty Bashism footgun incompatibilities. If I remember correctly the worst one is with how globbing / “*” works, which is why that is guarded with an option.

My main reason for sticking with Bash is that it’s everywhere, and the places where it isn’t try very hard to support the most-used featureset of Bash.

A stock Bash shell does feel a little naked without my dotfiles though :)