Earlier quoted context omitted.
A very very minute percentage of bitcoin is used in transactions. The vast bulk of it is seen by its users as an investment. And historically there have been Ponzi schemes that allowed people to cash out before the scheme fell apart — but it was always a small minority cashing out.
So no different than gold?
Go to Coinbase and try to figure out how to use Bitcoin to buy something with. All they talk about is Bitcoin as an investment.
A currency can’t be an investment as the expectation that it will rise in value undermines the main quality of a currency, which is to maintain a stable value, so it can be used as intermediary.