A person can own multiple addresses and wallets. It's hard to argue that if we had 1 billion wallets, bitcoin wouldn't be as volatile as it is.
Bitcoins is getting less volatile
2009/2012, the volatility was 99x
2013/2016, the volatility was 33x
2016/2020, it was 6.24x
2020/till present, it has been 3.94x
As the adoption continues, the volatility has been decreasing.
1 billion wallets doesn't mean 1 billion different users, but even if it did, I don't see how that would matter. If a lot of people dump bitcoin whenever something bad is said about it or when the governments announce more regulation or even bans, the value will always drop.
You are right, but in long term, bitcoin is a hedge against inflation, after the significant down time, bitcoin got to all-time-time. The last I could remember was when Elon Musk wanted to manipulate the market, followed by Chinese government FUD, this resulted in bitcoin price downturn from $63500 to a price below $30000, yet bitcoin skyrock back and reach $68900.
Bitcoin as a hedge against inflation? I guess every person has a different view on this. Good luck in explaining how good bitcoin is at maintaining its value to those who invested in it at $50-60k. On the other hand, its much easier to use the same logic on those who invested at $1-2k, for example.
But if people that do not believe bitcoin is not a hedge against inflation is asked if it is a hedge in long term, they have to think about it very well to know how true it is. Bitcoin is highly volatile and can be regarded as a speculative asset, but in short period of time. If it is a long period of time, it is actually a hedge against inflation.