> there is no central bank that can print more Bitcoin

It turns out this doesn't matter: you can't hear the inflation argument over the volatility. The amount of goods you can buy per Bitcoin changes dramatically on a month by month basis. It's just that everyone loved it while it was going up, but that's not actually guaranteed!

Also, you can't print more Bitcoin, but that doesn't matter: you can fork it (people have, BCH), or you can just endlessly spawn new token chains, or you can have things which both sides regard as abominations but are somehow immensely popular: stablecoins. These give you the legal stability of crypto tied to the price stability of the dollar. It turns out that what people actually wanted was several hundred billion dollars of virtual poker chips.