I just read quite a bit of the summary.

Honestly, I don't really care if they are cranks. The theory makes for a fun read, and they have a lot of interesting ideas.

Trying to identify where their theory is wrong is a fun exercise, at least for me. It also helps reinforce my existing physics knowledge when I see multiple perspectives, or alternative models of measurable phenomena.

The cool part about this theory is they have some pretty specific predictions, like the resting mass of the Neutrino (~2.2eV).

They also hypothesize that the Electron is made up of 10 Neutrinos arranged in a Tetrahedral pattern, and also hypothesize that the weak force can be explained via solar Neutrino bombardment. Which would theoretically be pretty easy to test, just test the radioactive decay of different materials in different Neutrino densities.