You are right ...BUT....
Fractional reserve banking is a given and serves society exceptionally well, but it is not criminal.
When fractional reserve banking was rational and not influenced by financial powers behind banking activity ...And there is many type of fractional banking of money, for example one backed by gold, one backed by energy, one backed by nothing ....
And something could be motivated by greed and power WITHOUT being criminal but being irrational or being an illegitame attempt to comply with greed demand in financial circle... like in the case of the repeal of the Glass-Steagal act by Clinton policy...
For exemple the abolition of the separation between investment bank and commercial bank and his link to the financial crisis of 2008...
I cite wikipedia here : «Weissman agrees with Stiglitz that the "most important effect" of Glass–Steagall "repeal" was to "change the culture of commercial banking to emulate Wall Street’s high-risk speculative betting approach. »
And Goethe in his analysis of John Law concept of money in the Second Faust, was not an accusation about "criminality" but about blind irrationality of a fractional money concept back by the wind...
And it is impossible to understand central bank complex system without reading about their history...