Anyone who deliberately ends DD early just to get seals, in my personal opinion, is very selfish. Of course, there's alot more to it than that, the struggle of the individual vs community is an ongoing battle throughout the course of history, and it's important to stand up for individual rights.

In this situation though (few seals for individual vs 100-200k less exp multiplied by the number of people present who want primarily experience)... well... whatever, as long as you get yours, right?