The question is: how much money an average person actually have?
Maybe not so little to call it almost nothing.
Looking at Fidelity in US (of course, having an account there means that you do have
some money). Posting averages, not median (median is smaller).
20-29 years old: $12K
30-39: 42K
40-49: 103K
50-59: 174K
60-69: 195K (small increase due to starting distributions, probably)
https://www.nerdwallet.com/article/investing/the-average-401k-balance-by-ageTL;DR people have not an insignificant amount of money after ~45-50 years of age.
Bitcoin changes this, of course...but you can see where you would have been (on average) if not for bitcoin, etc. OR a good luck in other investments, inheritance or card games

.
Well Biodom, you did kind of point out part of the problem in terms of trying to generalize the Fidelity data to the overall population, even though the data can get some kinds of ideas of where people might be at in terms of some kinds of wealth that they establish.
The Fidelity data is specifically 401ks, and there are limitations regarding how much can be contributed into a 401k from earnings, and surely the employer would need to have such an option.. which is another problem in terms of actually building wealth through a 401k plan.
I still would suggest that any of us could have aspirations that go above and beyond such 401k plans, and maybe even by the time we are in our 40s or 50s be getting to fuck you status, as we have determined those numbers, and sure there might also be some of us who might be able to achieve such fuck you status in our 30s, but surely would seem like a rare duck - including that sometimes even a greater wealth cushion might need to be established to be able to make sure to have a sustainable cashflow from the principle wealth that has been built up.
Back to impostor syndrome is to get the sense that you have 10x, 20x or some greater amount more wealth than the circles in which you are and the circles in which you had anticipated that you would be at whichever age category that you are in.
I do believe that there are not a whole hell of a lot of normie Americans (probably applying to other westerners, too) who have substantial amounts of wealth outside of having their own home (presuming most of it might be paid off by the time they get to retirement age or some point before that) and maybe a 401k, so merely getting to some point of having some pool of wealth to draw from ends up likely being exceptions rather than the rule... so any of us who are able to have bitcoin and to allow bitcoin to get us to a higher status may well feel fortunate, even if we do not end up feeling like an impostor, exactly.