What's dumb about it? Hyperbolic maybe, but not dumb. I'm 100% in favor of school vouchers. My kids went to an elementary school in SDUSD, it was a magnet school (for PE of all things) so kids could choice in. So many kids choiced in from shitty schools that the district board member from the shitty schools complained and got our schools magnet taken away. So instead of stepping up and fixing their shitty schools they punished our school. That's our California public schools system.
I really shouldn't have to explain why school vouchers are a bad idea, but why don't you start here: https://lmgtfy.app/?q=why+are+school+vouchers+bad