No, in fact he is correct: system scripts won't pick up your overrides configured via your shell's rc scripts.

I said he was right, but in your case you are wrong. Your shell loads thr profile script for login shells, but will load your bashrc regardless of login or not

Excluding this argument, overloading system commands is still bad practice lol. Have you ever logged into an embedded device and had a busy box environment? the behaviour of some utilities can be different from what you expect for utilities of the same name.