The fed doesn't have access to taxpayer money.
Printing 20% more money doesn't seem materially different than taking 20% of everyone's money.
Either way an individual is able to buy 20% less stuff and the government is able to spend 20% of the value of the economy.
Except the fed has to answer less to the public than legislators do. We have a non-elected tax authority deceiving the country about the level of tax they are paying through the subterfuge of an overly complex system.
I would love to hear how this assessment is wrong (actually, not rhetorically).
The creature from Jekyll Island by G. Edward Griffin is a book that describes the creation of the FED, how it was done in secret.