The science of their method to disprove dark matter is really pretty good. The problem is how they present other scientists as foolish for holding onto dark matter theory. More researchers should definitely take a look at the evidence. There are some strong reasons why dark matter is the favored model, and it needs to be a strong refutation to rule it out. If other contenders like MOND didn't also have significant problems of their own, people would also be more eager to lend them credibility instead of dark matter.