As a general rule, inflation happens when new money is released. New Bitcoin is released everytime a block is mined, so Bitcoin absolutely suffers from inflation, as others have said. USD's 2017 inflation stands at around 2.1%, while Bitcoin's is at 3.9%, but Bitcoin's will be increasingly lowered every halving, and will eventually flip to deflation once all coins have been mined.
Either way, it's not much of a problem. People seem to be much more worried about the eventual deflation, which carries concerns towards its utility as a currency.
Yeah, i guess you're right. Still bitcoin won't go anywhere any time soon and will still be the biggest crypto i think.