If it did, could the world handle that many millionaires? Wouldn't inflation kick in? Just like the raising of the minimum wage is a con because as soon as that happens, the price of commodities just follow the same percentage. Fiat currency just loses value every year.
Assuming BTC rise would create a lot of millionaires, why should it increase the price of consumer goods? Will these millionaires rush to hoard bread and eggs? I can only see increased demand for luxury goods, so the general population will not be affected.