"PUG raid lead" in this day and age basically just means your text is red instead of orange. Maybe it's different in the first week, like right now, but within a month or so most people pugging will know the strats, pulls, etc and you're not leading so much as coordinating (basically just making sure you have a couple tanks, couple good healers, if you lose them get more, etc.).
Right? God forbid anyone stay in the level of content they enjoy. If they can't clear a level of content set out by others they're all scrubs.