Pretty soon, you'll go through 10 tubes, and then you'll develop a resistance...
Way to go, blame the vet... oh wait, yep, old time vets will help you do this. Appropriate medical treatment for an ear infection involves a microscopic examination of the ear wax, appropriate treatment, and continuing that treatment as prescribed until a follow-up microscopic examination confirms the infection has resolved.
Most recurrent infections are because you either failed to treat completely (many infections take 2-6 weeks of treatment to resolve) or because of an underlying condition that needs to be managed, and except for the vaccines thing, I have seen chronic ear infections secondary to all of the listed problems.
The ear flush technique sounds like a good way to rupture an ear drum - and that soap they recommended - will more than likely make your dog deaf if it gets into the middle ear. If your dog has that much waxy buildup - you need to be visiting your veterinarian, I can guarrantee your dog has an infection, and the flush won't do anything to treat it.
The preventative tips were good though... more than 5 q-tips to clean an ear, yep, probably an infection and need to see your vet. Good explanation of the ear canal anatomy also.