Morally wrong? Like how? Please look up "utilitarianism" and do some reading on ethics, social contracts, etc.
A statement like the one you made really needs further reasoning to back it up. You might even be correct - but just claiming something to be true doesn't make it so.
socialism is ideally utilitarian. in reality the only people who benefit are those who hold the regulatory power to grant or withhold public funding. all you wind up doing is concentrating power in the hands of those who get to decide what is "the greatest good".
I have no problems with double taxation. Just don't compare capital gains vs. Income tax. Which is what the blogger is doing. When in reality the equation is: Actual Tax Paid = (Income Tax + Capital Gains tax).
Tax rates are determined (well, should be) by what works. If some double taxation is good for the nation, more power to it.