Inflation is increasing prices, which has causes other than central banks putting more money into circulation. When Bitcoin’s value drops, prices in Bitcoin increase so it experiences inflation regularly.
The latter is volatility.
Apples and oranges.
Resources like gold, land, or bitcoin, if broadly used, is deflationary as the economy grows, even from simple issues like population growth. All else being equal, if I save $100 today, and the economy triples, it's worth $300, since I have the same piece of a bigger pie.