I live in a very different reality I guess.

// religious private schools are sucking up funding meant for disadvantaged children (in public schools),

What does that mean. In our case we pay about 20k a year in town school taxes only to send our kids to a private religious school. So the fact that my kids go to a religious school literally makes my money available to educate other people's kids in the school.

// churches are abused as tax haveans

Anything can be abused I guess. My synagogue is constantly raising money for secular causes like disaster relief and feeding the homeless. The fact that a congregant gets 3k back in taxes on a 10k donation still means he's out 6.