I have elided the imputed conspiracy from the statement because I don't think it's really meaningful to the discussion.
Regardless of the individual merits of any particular charter school, the promotion of charter schools collectively is key to the ... strategy for destroying public education, because voucher-funded charter schools will siphon money and the best students from public schools.
That, in turn, will degrade public schools, at which point advocates for charter schools and privatization will point to public schools and say, "look! Public schools are a failed experiment. We need more vouchers, more charter schools!"
It should be axiomatic that you don't solve a school's problems by shipping its best and brightest students somewhere else. Leadership in schools isn't just from the teachers. Start the reform discussion there, not in seeking to set up new ways to institutionalize discrimination.