I have no lisp experience, but I want to ask to who knows more: isn't the use of too many macros a potential hinder to maintainability? What happens to a projec

I have no lisp experience, but I want to ask to who knows more: isn't the use of too many macros a potential hinder to maintainability? What happens to a project when it becomes a mini-language in itself, with its conventions, it's opinions, it's specific flavour? Does this help or discourage the onboarding of new developers? I know C is not a good example, bit at least in C projects, I was always wary of "smart" developers inventing their own "smart" conventions and syntaxes