The tax you pay doesn't belong to you and you didn't earn it - the law is very clear on this.
The tax you pay doesn't belong to you and you didn't earn it - the law is very clear on this.
Once taxed it then belongs to the government, in a very real sense, the tax-payer no longer have access to it. While it no longer belongs to the tax-payer, it does not therefore follow that they did not earn it.
Why do some institutions (property law, contract law) count towards what I truly morally earned but not others (taxation law)?
It doesn't. It rightfully belongs to the poor who need food and healthcare.
Why is it greed for someone to keep what income/wealth/property they've earned while also is not greed to claim that someone else's income/wealth/property is actually owed to another group?
Your contention is that some institutions count as property rights (contract law etc), but taxation law doesn't. I'm telling you the line between them that you draw is drawn purely with ideology.
Taxation law isn't some adjustment that takes place after property law, it is part of property law. $X of tax paid by party A that ends up funding $X of social security payments to party B, literally belongs to party B. It is the property of party B. Not party A. It is not "someone else's" in any way.
In that way there's nothing special about the quote because most people generally recognize private ownership in everyday speech.
Claiming that something is true simply because of law is fairly short sighted. There have been and continue to be unjust laws worldwide.
"That's what the law says" is a lousy moral justification for something. There are plenty of unjust laws or just things that are not laws.