This actually makes a little sense. As an example, say every starts with 5,000 chips and at time of needing to move someone and 7 of the 8 players are down to 500 chips each and 1 guy is sitting with 36,500 chips and he is on the BB, he gets moved leaving only a possible 3,500 chips on the table in total.

The guys left on the table don't have much chance winning the tournament do they?

But if it's one of the shortest stacks which moves then there are still plenty of chips on every table.

I know I have taken an example to the extreme above.