I think people do say that. The notion is that when you look at the people attending Harvard and Mit, for instance, their parents tend to be much more wealthy than the students at Bunker Hill Community College. You're right! That isn't an excuse to shut them down but it might be a reason to think of the system a inequitable. It may be that similar parallels exist in K-12. Then if you're middle class or poor, you have to wonder, "Why am I paying taxes for an elite school that my kid likely won't attend? Can't the rich kids' parents pay for the elite school themselves?" That may be short term thinking or kind of defeatist but it is reasonable.
> That may be short term thinking or kind of defeatist but it is reasonable.
I think this is exactly the wrong thinking about taxes. And it's abused by pundits and politicians by making people spend the same money many times in their head. I mean, you can't be simultaneously outraged that "your tax money" supports elite schools and abortion clinics and the military; you don't pay that much of a tax. In fact, an average taxpayer's contribution would amount to buying some office supplies for one, small government building.
Money is fungible, and by the time enough is collected to fund a school, there's no "my money" in there anymore, much like if you take a fistful of sand from your yard and throw it on a beach nearby, there is no more "your sand".