It's not the only way we refer to these things, but it's an accepted one.
It works great at the ballot box too! "Vote now for your free stuff! Everybody gets more free stuff when they vote for me! Support the bill for free stuff!" Because if you called it "using other people's money", then the Ghost of Margaret Thatcher would arise and invade Puerto Rico.
While you're voting, consider whether you're in that hacker demographic that gets a chuckle out of the meme that says "The Cloud Is Just Someone Else's Computer."
I disagree with you, but I'm not discussing your value judgement, I'm discussing whether "free" is widely understood to mean taxpayer funded.