This being the theory that "no one is going to spend Bitcoin if it keeps increasing in value, since they will sit on it instead, for the future gains. Therefore the currency is deflationary."
Amazing how this rationalization, given to slaves to justify their slavery, ends up being touted by the slaves themselves.
Technically the same is true of the U.S. dollar: If you put your dollar in a savings account, instead of spending it, you will earn interest. Therefore you will have more money in the future, from the interest earned, if you don't spend that dollar now. Therefore the dollar is also "deflationary."