Well, my contention was that even if all the government-bonds & private-debt is paid off, the money could STILL exist, contrary, to your claim that it couldn't (an erroneous claim many seem to make)
Well, if they raise reserve-requirements then that would shrink the moneysupply; google "money-multiplier"
I'm not really sure what you mean by "debt-free money" because the way it seems to be used these days is the way Bill Still ("Money Masters", "Secret of Oz") tends to use it, that is to mean an unbacked paper-money, which isn't really "debt-free" as such because it's really a "claim-check" of sorts, an obligation for the issuer & a claim for the bearer.
For example, under gold-standard, you could get gold for the your "claim-check" (paper-money) but under an UNBACKED paper-standard, it's "backed" by "faith & credit of government" (which approximately means........NOTHING) So even though some people tout it as "debt-free", it really isn't; the only truly "debt-free" currency would be one where the paper is actually backed by something that goes on its market-value (it could be gold, silver, iron or any other commodity that markets prefer)
If I may, I'd advise you to not debate "money" with BF unless you want to end up in a useless, endless loop of semantics because like Roy L, whatever BF says is the "self-evident objective truth" so there's no point in us mere mortals arguing with him

Here's something I've gathered so far:
1) According to BF, "money" only means central-bank-money, not commercial-bank-money (even though both are equally fictional, commercial-bank-money isn't money

)
2) Only central-bank-money causes inflation/deflation, not commercial-bank-money (oh, those bubbles, they were figments of our imaginations

)
3) Paying off debt doesn't diminish moneysupply

May be there's more but I can't recall right now.........
Anyways, for those of us who have a "twisted" view of things, may be able to see why it's sort of a "claim-check", an obligation, it says something on the left-hand side of the note, something about "debt"........
When one gets something from someone, one is "indebted" & it is dissovled by handing a "claim-check" to the seller, which was previously received by the buyer from someone else, & so on the chain goes back to the original issuer, whose obligation it is........but here's the thing, it doesn't specify what it is that the bearer will have a claim on....pretty smart heh!