bitcoin DOES have inflation.
Discussion
Bitcoin has predictable issuance, not monetary inflation. Check https://bitcoin.rocks/inflation for more :)
Bitcoin has an issuance schedule. The supply doesn't inflate and remains 21 million today just as it was on at block 1.
but the supply right now is not 21 million yet. i feel we are arguing over semantics. i argue that "inflation" is the correct term and there is nothing inherently bad about it. inflation turns sour when it can be manipulated by a single entity - but still, there is inflation.