I also recognize it is a real problem and we can solve it likely through policy/political will power. It in and of itself is not going to solve our problems.
And it's also true that it's pretty clear the US median wealth figure should be higher than it is, considering the vast average wealth figure in the US. The gap between those two numbers should not be as great as it is. And blatantly the bottom 50% of the population should have a lot more wealth than they do at present.
Maybe if the US had eg a good universal healthcare system (and no more medical bankruptcies), half of the country wouldn't mind so much that that median vs average wealth gap is what it is. Social contracts are important. You get this, they get that. As it is, the US social contract is not so great these days, compared to other affluent peer nations. The US has a large welfare state and gets a lot less for its spending compared to other peers. If our healthcare costs matched Britain per capita, Medicaid could instantly expand to cover 40-45% of the population for example, at no additional cost.
Treating things like Social Security and Medicare obligations as unfunded debt is akin to me declaring that I have a large amount of debt because I have to pay for food and clothe myself from now until I die.
It's money I will pay, most certainly, but it's only an obligation to myself to sustain my life at some reasonable standard. Much like Medicare and Social Security, it will be paid for with money I earn in the future as I live my life.
Right now we are benefitting both from the stability of the US Dollar, as well as from the benefits of pumping more and more of it into the system (rising asset prices etc), if they lose the ability to maintain this balancing act it won't be pretty.
For example, let's assume a country of 10 where 9 people have $1 million and 1 person has $100 trillion. The inequality is massive but everyone has a great standard of living.