Even for LEO. Plane changes are expensive - and you've got to then wait potentially many orbits to get a collision. To shorten that timeframe you'd change your apogee or perigee anyway.

Raising the apogee, then changing the inclination there is relatively cheap - and you can adjust the plane change and apogee to time a collision. Remember - there is no need to recircularize. Just collide. If the goal was to recircularize then I don't know if raising the apogee would be worth it, maybe for extreme cases. But not for a collision.