Hmmm well here you have two things, people that que in duty finder "for fun" and people that que in duty finder just to do the fight/dungeon. Sadly you cannot separate the groups that want to do it because they need it done asap and the ones that want to learn it the ol' fashioned way.

Granted it is fun going into a dungeon blind, but atleast ask before hand if you're new to the dungeon. Personally I like explaining a dungeon/fight to help others get through it, even if it takes longer to pass but I rather spend 5 minutes explaining each boss/primal than having one member dead the whole run.