The controversy is really only present in laymen circles. In scientific circles, DM proponents vastly outnumber MOND proponents. I agree that science is meant

The controversy is really only present in laymen circles. In scientific circles, DM proponents vastly outnumber MOND proponents. I agree that science is meant to be challenged, but a worthy challenger must produce a better theory. The consensus is that DM fits the available evidence best. The case about dark energy is way less settled and way less clear due to lack of evidence. The standard model (i.e. a cosmological constant) fits best while having the least number of parameters, but I'd say that most cosmologists agree that it is not the final answer. It is expected that another theory with more free parameters will prevail, but current observations are not precise enough to decide which ones can be ruled out.