Not Correct, Brandon

Nature abhors absolutes, and so does Discrete Scale Relativity.

DSR specifically predicts a “valley” at 0.730 solar mass, not a completely barren desert.

Atomic Scale nuclei with masses of about 5 atomic mass units are very unstable, but they can exist for short periods of time and their Stellar Scale analogues could exist for 5.2 x 10¹⁷ times longer.

Also, there are cases where white dwarfs have been reported to have masses of about 0.73 solar mass, but then they were subsequently found to be close binary star systems.

Also bear in mind that stellar masses determined by spectroscopic and stellar evolutionary methods are subject to considerable uncertainty.

At this point I do not think we have the technical ability to convincingly verify or falsify the preferred stellar mass predictions. Since the same mass function would apply to the dark matter if it is the form of primordial black holes, the advanced LIGO and other future gravitational lensing research efforts might offer sufficient accuracy to test the prediction.