How many people buy houses as an investment instead of living in them, how many people buy oil as an investment instead of using it for fuel, how many people buy gold and silver as an investmen instead of using them for jewelry or industrial applications, how many people buy dram as an investment instead of putting it in their computers... I guess it's all a scam then?

Many of them, yes.

Not sure what you are trying to show with your graphs, but if you cannot use bitcoins to buy everyday stuff, then it's value is still tied to the economy and every advantages crypto has is almost all moot because you can't pay rent or buy groceries or a new car. So it's your local currency with extra steps, and good fucking luck using your coins in a case of emergency.

Its value is directly linked to the economy, if the Fed is printing money, your crypto coins will lose value.