Yes, and the drivers for these extra free plots on old servers are going to remain for a while.
Not everyone is tied to their old server. Some people don't mind moving for the real benefits and prefer a less crowded Limsa.
Whole friend groups will move. If most move, then even those with homes can leave those.
People moving and giving up their house, is freeing up properties on old servers, as well as the homeless who move reducing the number of people left on the old server in the race for what's there.
