Can you (or Tok) point to a part of a cryptocurrency which isn't cryptography?
the dev team, the website, any part of the wallet not doing a cryptographic function, the buyers, the masternode operators, the network transport, whatever isn't going into a cryptographic function.
...but i see what you mean. (I think) Tok was coming from a business point of view to try to rebalance the fact that on the XMR thread devs like Fluffy keep banging on about XMR is secure due to cryptographic proof and even sites examples like Tor and SSH - which forgets the other half of cryptocurrency security which is the implementation (heartbleed etc)
The dev team, the website, the buyers are all unecessary. The network "transport" heavily relies on cryptography when it is authenticating to a node during a handshake.
Maybe I can help with an example. Bitcoin is like a highway, large sections of concrete and bitumen painted with guidelines and reflective cats-eyes. The Monero developers see this design and decide to make a similar transport system, maybe a high-speed railway line in this example. The Bitcoin and Monero developers don't care what vehicle (GUI wallet) you choose to ride, as long as it obeys the rules of the road or rail. They also do not pretend that their transport system prevents accidents, because that would be silly.
On the other hand I am starting to see that Dash is like a rickety school bus. It is built on top of Bitcoin's code and all the hard work developers like gmaxwell have done, and so it is appropriate to view it as riding on Bitcoin's 'highway' in our minds. It doesn't matter if there is one rickety school bus (Bitcoin Fog!) or 2,000 of them (Dash) you still have to hope that the driver of the rickety school bus isn't suicidal and has actually serviced his engine. You might ride with some good bus drivers today, but what about next week or next month? I'm understanding now for the first time that I don't need to trust the driver of the bus when I can take a step to the left and use my own train on the high-speed railway.