Math, personal experience, and observation tells me otherwise -- for a human living in California, at least. Between Federal income tax, Social Security tax, State income tax, the various (un)employment taxes, sales tax, excise taxes of one type or another, property tax, etc. I suspect that most people give 1/2 of their income to one government entity or another.
Whether that is an acceptable amount is another matter entirely. That's a normative judgment call. But the raw math seems to indicate a massive haircut.
And don't get me started on the financial burden of the friction of the tax system (aka paperwork and complexity).
(Disclosure: I am an international tax lawyer and it is my job to think tax laws are evil).