I argued that the old pipe wrench is so effective that after a practical example the threat of the old pipe wrench is enough to break any cryptography whose key is known by a pipe-wrenchable individual.

At that point, the individual needs his/her own pipe wrench.

And it is usually a good idea to aggregate with trusted others to pool resources and get a bigger, stronger pipe wrench.

Which is the military.

I did not get a response other than that my reasoning is flawed and oversimplifies the issue. Which, tbh, it definitely does