None of what you people typed refutes what I said about Exter's Pyramid.  Not a single thing.  As for claiming food becomes the base of Exter's Pyramid should this monetary system blow up, that would just be flat out barter and doesn't even count.  I define money as something that acts as an intermediary.  Doing 1:1 trades of a can of tuna for a chainsaw doesn't have that.  The further you abstract things away from barter, the bigger a scam it is, and physical commodity money like metals is the closest thing to barter without being barter.

As for why cryptos can't compete with metals as the base of Exter's Pyramid?  You can stop all the hand waving and bullshit - none of them remove middlemen or counterparty risk.  That's why I gave Come from Beyond best scamcoin of 2017 award.  Because it's the coin that comes closest to removing middlemen while still failing and being a scam:

2017 award for best altcoin scam - Come from Beyond of IOTA

https://bitcointalk.org/index.php?topic=2789996.0