okay,

"whatever you're offered to trade for it by the issuer to make you use it is what backs it."

you mean the value derives from the trade with other goods!?

yes you could also say that

the "backed by" and "intrinsic value" are mostly similar arguments, i would say

i could also say nothing is backed by anything

maybe only the human condition is governed by the natural laws

but i am making to many points here