I don't see the point. Fourier methods, whether their modern form or their ancient form in the Ptolemy's model are useful, predictive and successful. They were

I don't see the point. Fourier methods, whether their modern form or their ancient form in the Ptolemy's model are useful, predictive and successful. They were used to predict planet positions, and (for example) sea levels near shores. However Copernicus and others realized that there is a better point of view and more deeper understanding of what is going on. My point is, dark matter hypothesis is similar situation, we can bend it to explain very much, but there is no great revolutionary insight coming from it, we are adding tweaks, adding more independent quantities, like we did with epicycles. Perhaps there will be new Copernicus who will show a better point of view, a deeper understanding of the observations that lead people to introduce DM.