If you already know what you want but want to save time writing it
IME, going to ChatGPT for code usually meant losing time, cause I'd go back and forth trying to get a usable snippet and it would just keep refactoring the same slop that didn't work in its first attempt
Are you sure he hasn't taken the proper precautions of just getting commercial insurance and filing taxes 4x a year (assuming US based)? Like yeah, you shouldn't just go get in your car and go to a bar and offer people rides for money but if this guy has regular customers I wouldn't be surprised if he also knows how to look into his own rights