Nope, you still seem hopelessly confused, mixing up two different groups of people.
If some people drop in but then want to leave immediately, LET THEM. What, you think they're conscripted soldiers who should be shot for desertion? It's NOT UP TO YOU.
But if they stay and fight, either they're doing it because they enjoy fighting for awhile, or they're trying to support the cause. Either way, it's up to THEM to decide when it's appropriate to leave (out of ammo is one rreason, being seriously damaged is another). Again, it's NOT UP TO YOU to decide that I shouldn't fit weapons that require ammo, or that sticking around with no shields, 5% hull, and inoperable weapons would be a worthwhile thing to do.
IF I CHOOSE to drop into a CZ, and IF I CHOOSE to stick around, I will use MY CHOICE of weaponry, and seek rearming or repairs WHEN I CHOOSE.
And for some reason that offends you.