So I shouldn't ask him to provide things he claims to have? By that logic if someone says "I have solved a problem no one else has" they don't actually have to provide a solution precisely because no one else has.
His view of cosmology is as flimsy as yours. At least his pictures are better. When someone says "I have explained...." its contradictory for them to then say ".... but I can't model it". So you've got a perfect understanding of electromagnetism but you can't actually tell me the force between two electrons at a given distance? Then the claim is a lie. When anyone in the physics community publishes something along the lines of "An explaination for ...." or "A new description of...." they will state their assumptions, work through the logic and mathematics, get to some quantitative predictions, stick in some numbers to demonstrate the application to physics or particular special cases and then round off with a conclusion as to what could be done next or how it might be further tested. I have yet to see a hack on these forums do anything like that.
So I think your "don't ask for things not yet in the scientific body of knowledge" implication is wrong. I don't ask anyone here to do anything I wouldn't expect a reviewer to ask me if I made such claims. Extraordinary claims require extraordinary evidence but its almost invariable that the grander a cranks claims the worse the evidence.