However, the poor (not literally poor) ones want to show off, want to get hot girls, want to get attention from rich guys, want to show they also belong to the elite class. So what they can do? – They pretend to be rich / from higher social class.

As the others mentioned before, they are not Bitcoin's problem. Indeed Bitcoin emerged for realizing “Financial sovereignty”. Although nowadays it looks like it failed on its mission, but this is another story for another day.

I want address the “fake” rich problem by a philosophical point of view.
In ancient Greece civilization there were two kind of people, freemen and slaves. Whereas slaves have to be involved in the painful labor and life to satisfy their masters needs and their bodily needs, the free men have time to do the “heroic action”. The action by which excellence produces beautiful deeds. One could distinguish oneself from others, because of what “action” he did and not because of what he has in possession.
The “heroic action” is what we are missed in our civilization -since we are modern slaves-. So we pretend to be freeman by possession and not by doing “action”.
We have to act, particularly “heroic action”.