Yes. LEO is "halfway to anywhere" but only halfway, boosting up to a high earth orbit requires significant amounts of fuel, getting all the way out of earth's g

Yes. LEO is "halfway to anywhere" but only halfway, boosting up to a high earth orbit requires significant amounts of fuel, getting all the way out of earth's gravity well takes more, and to get to the sun would take even more than boosting all the way out of the solar system. If they put them in an orbit "next to" the ISS then atmospheric drag would eventually carry them down until they burned up (even the ISS itself needs to be regularly boosted or it would eventually fall down) but that way it's unpredictable and uncontrolled (and there's always the risk of them hitting a satellite or something), a planned re-entry burnup is generally thought to be safer.