Not necessarily. You can have a budget at any income level. It just might mean facing the fact that your expenses are higher than your income. No one says a budget can’t show you how much your going into debt instead of how much your saving. My partner was there through his college. It’s just depressing so you are less likely to do it. I don’t know if I would stick to it.
But I think knowing where your money is going and where it is coming from is a key step in motivating yourself to make a change… either to fight for other opportunities or to change spending habits. And it also gives you visibility into what differences it makes on a weekly or monthly or yearly basis.