This is not at all true.
I wasn't trying to describe Bitcoin, I was trying to respond to the "why Bitcoin is better than fiat" question
You mean you were referring to the practical advantages of Bitcoin rather than to its conceptual understanding.
Yup -- ask five people what a dollar bill is and you'll get five different answers. One might say it represents a tiny fraction of gold held in Ft. Knox, another might say it is the only legal form of money allowed, etc.
But everyone knows the basics -- that fiat currency and coin is accepted by merchants for making purchases and we know that's how employers pay compensation. If this fiat buys a gift card and that card is then accepted by merchants, it makes no difference to the consumer if what is stored is $50 fiat USD or 0.5 Bitcoins -- as long as it holds at least the same purchasing power as it had when purchased.
People want their money to have all properties money must have, not only to be a trustful store of value. Knowing which properties are those, and why, depends on a conceptual understanding of money.
For example, the most fundamental property money must have is that its monetary value must be private while its representation must be public. Our current monetary representation is partially private: banks control its creation, which allows them to "relocate" monetary value privacy, hence ownership, through inflation. In contrast, public keys are an inherently public way of representing money, which leaves monetary value privacy, hence ownership, intact.
Our problem is not just inflation, but systemic inflation in a centralized monetary system where monetary representations are privately public.
“How did you go bankrupt?"
Two ways. Gradually, then suddenly.”
― Ernest Hemingway, The Sun Also Rises
A lot of people will not see that coming, and another lot will not fully understand it despite becoming aware of it to a certain degree. However, some people should fully understand it.