In a situation like this theres a sure fire way for me to decide if Im going to be nice and pass on tank gear when Im tanking if its only a glamour/Seals item for me.

1. Was the person/people in question a jerk ass or bad at their job?
2. Did THEY pass or greed on Job Loot that was not an upgrade for them but a glamour/seals turn in.
3. Did they mention that they were looking for upgrades to an alternate Job?
If situation one I'm needing. If situation they did pass/greed in situation 2 then Ill return the favor and greed/pass in deference to the group. If situation 3 then Ill pass on the item if its not an upgrade for me.

As for the whole sitting at the end of a dungeon and letting the timer run trying to wait people out to get the loot by default pass, yeah that tells me they're clownshoes and don't deserve my kindness. I'll roll need and "/p Going for a smoke/snack enjoy wasting your time on the timer." Assclowns will be assclowns no matter what so just let it roll off you.