If you cannot take the time to learn the language, what makes you so confident your python doesn't also have 3 bugs per line as well?
ShellCheck is a great tool, yes, and can be run natively inside your IDE. Just like any language, you need to learn the language and learn it's tools.
Blanket statements like "write all your scripts in python because there's less bugs" really just means the commenter is more familiar with python. Do enough script writing and you'll realize how absurd that statement is.
It's a lot like the folks that scream nobody should ever write a single line of C or C++ because it's "dangerous" - yet untold number of lines of C/C++ are written every day. A pencil can be dangerous in the wrong hands...
BTW both shellcheck and mypy are equally optional, so I'm not sure what your high horse is about.
In fact, as soon as you need to use arrays, it's game over.
>In fact, as soon as you need to use arrays, it's game over.
Why?
PS. comfortable with both. I don't draw lines based on LOC or arrays.