Whether or not someone thinks the degree is useful is a different question alltogether (ie macro-economists “throwing darts at a board” to predict market fluctuations).
I think one misunderstanding many people have is that economics is all a macro study of “the economy” and markets. I took one macro class in my undergraduate degree in economics, along with intermediate micro, econometrics, public economics, development economics, behavioral economics, industrial organization, and natural resource economics, among others. Each of those classes required differential calculus to either optimize prices, quantities, or bundles of goods, or integral calculus to integrate under a curve to determine lost profits/damages.
Genuinely not trying to be argumentative - I agree that education can be fixed in many ways and that classes in utilizing practical skills like functions in excel are far more important for the lay student who won’t double major in math and econ and go to Berkeley for a PhD. However, the study of economics and doing economic analysis does require calculus.