Geez fella. You really can't see the critical thinking failure there?
If you want to get pedantic and technical, Machinery's handbook states "plastic movement of material", which is exactly what happens with the nylon lock patch. It does NOT say "plastic movement of steel", which seems to be your interpretation.
Beyond that, I said "function as an interference fit". Do you know what "function as" means, or do you need that defined for you? It's not the same as "is".
The nylon lock patch does not make the threads "dirty", and it does not just get wiped around the threads like Thread Pirate said; it deforms to fit the threads but stays put and forces the threads to one side, creating higher metal to metal friction on that side. If it were to get wiped off and spread around the threads (usually from excessive use), then it fails to do its job correctly at that point. The type of pre-applied patch that does wipe around the threads by design is a completely different type of material, and works through a completely different mechanism, being adhesive rather than just something wedged between the male and female threads.
I ran fastener testing for one of the largest truck manufacturers in the country for several years, and am intimately familiar with what the pre-applied nylon patches do and don't do. They aren't used on precision threads for good reason, which I hoped would be evident from my comments but apparently not to everyone.
What's even your point here? Just to defend the biggest dickhead on snipershide? Some of you turkeys that like to jump to Thread Pirate's defense could do better to pay attention to the stupid crap he actually says, and his method of crapping all over threads to derail them.