except there technically is pretty srs inflation for a while to start with for btc
True, but interestingly the inflation of the number of coins mined (even with this creation being greater at the beginning), is still having a generally uptrending price if you take it on a span of years. So the price is still deflating even though the supply is inflating. Tell that to the dollar.
Japan had a period of ~10 years of deflation they they only semi-recently were able to get out of. In order to get out of a deflationary cycle they had to "print" trillions of dollars worth of yen over that decade.
Having a greater number of currency units does not necessarily mean that the purchasing power of each until will decrease (have inflation)