Earlier quoted context omitted.
inflation? I think he means DEflation
In 8 years (by 2021) 90% of Bitcoins will have been issued. Strictly speaking, the supply is inflating continuously, though it is unlikely to ever be growing faster than future demand (we seem to have past that point within the last year). The only reason economists would call Bitcoin deflationary is the presumption of constantly growing demand.
what about Bitcoins being lost? perhaps we should also consider coins that are not used in the past five years also "lost".