There was a time when a whole lot of money was literally in the form of gold and silver coins. Explain to me how a physical gold coin in my hand is literally debt?
Explain to me how bitcoin is literally debt?
And, you don't get to claim that those are exceptions. You said that all money is literally debt. I'm pretty sure that claim is simply false.
With Bitcoin it is quite obvious. The strange part is that these assets have no corresponding liabilities, nobody has to accept them. The best you can do is speculate that people will accept them in the future.
Bitcoin is a literally a distributed ledger, so it's very much debt.
Gold and silver aren't strictly debt because they also happen to be commodities that were used for their aesthetic properties. However, it's use as money is a system of keeping track of credits and debts.
And, can you explain, if a bitcoin is debt, to whom is the debt owed?