Apparently I have an unpopular oppinion on this topic:

What's the point of having a static if you run off to clear content with pugs? Don't get me wrong, I don't mind that static members re-clear stuff after the static got their 2 chests but I do mind if the static is still progressing in one turn. That might don't hurt the static directly because there might be no kill in this week anyway but then again it kills (some of the) feeling of accomplishment if you finally be able to clear it with your static. Because fights always get easier if one or more already have the kill.

But it seems I'm old-fashioned that way.