Why not both? Becasue that’s exactly what Machete order means, while it does not only mean to put the prequels between 5 and 6.

Machete order was invented in 2011, while 4-5-1-2-3-6 dates back to 2009. Obviously, Machete order builds up on that and cuts TPM.

A real life machete has following properties: A long, sharp blade and a big handle. Properties of a knife: small blade and handle. Would you call a knife “Machete” or “Small Machete”? If you want a catchy name, call it Rister order, I’ve seen that one a lot.