> Does this seem normal to you?
Yes. Currency is a mean of exchange, nothing more.
Economy is essentially how to satisfy the needs of its participants with the limited resources available. For the graph that you linked in a somewhat alarmist fashion to make sense, you need to compare it with a plethora of other information for it to make sense.
What is the productivity of people and corporations? What are the level of imports and exports? What is the cost of living? How much in taxes did the government earn? How adequate are the expenses in infrastructure? What is the level of debt held by the public and private sectors? Is that debt sustainable?
All those are just questions that I haphazardly put together while writing this reply, and they all tell other facets about the state of the economy that the money supply won't tell you.
>>Since 2007, wealth has declined for all but the top 20%.
>Oddly (or not oddly) enough that’s when the monetary base graph starts skyrocketing.
A deflationary economy would massively widen wealth inequality, as it heavily favors capital holders (as money itself gets more expensive over time).
A lot other things happened after 2007 that helped increase wealth inequality. I see the "skyrocketing" money supply as a side-effect of those things.
Correlation does not mean causation.