To be fair, the problem here is that the waste is already in orbit (by virtue of being part of earth). His point is that if you want to hit the sun: don't orbit

To be fair, the problem here is that the waste is already in orbit (by virtue of being part of earth). His point is that if you want to hit the sun: don't orbit it. To stop an orbit around the sun is a hell of a job. But if you're not orbiting in the first place: no problem.