Nobody thinks of BTC in BTC terms. They think of it in USD terms, and right now the notional amount of BTC is higher than the amount of USD that will be available to meet it in the event of a very sharp correction.

At least, that's my view. We'll see if there's a flight to liquidity when the bubble in Bitcoin's price finally pops.

OK, so in your world Bitcoin is an overpriced bubble.

That's a reasonable position to have. I think it is overpriced too.

It still doesn't make it a 'fractional reserve system'. It instead means that the price is to high.

These are different things, that have nothing to do with each other.