Does not mean the party leader is even capable of clearing it himself without being carried which happens a lot even in farming parties in my experience or PF's which have things like must prove have cleared it, if die equals kick and so on. It's one rule for them another for everyone else far too often when those same people die and they don't get kicked, they fall behind in DPS or lose concentration and let everyone else down yet don't get kicked.
More than would expect I also encounter those who think they are pros, have clears, have the achievements and such die just as much as the new player, mess up just as much and for example back when did T5 I made a learning PF that had two so called pros with multiple clears under their belt and egos to match come in and promise it would be easy with them there because they often farmed it yet during the instance three out of the four wipes was solely because of their mistakes and their errors...their own bad performance.
Unfortunately PF has created too many elitists who are overconfident in their own abilities, happy to put high restrictions on others yet rage when those same restrictions might be applied to themselves. There is one restriction however that annoys me more than any other and that is the no soldiery, poetics, law type one. I hate that because I believe people should be given the chance, if they fail a lot so be it and maybe kick them but to not even give them a chance to prove themselves annoys me.
That's not to say all PF groups are bad or have such happen but too often I have found that to be the case in which the one who made the PF with it's restriction is the one who ultimately causes a lot of the wipes or is the one being carried and they placed such high restrictions because of their own lack of competence which requires others of even higher quality to make up for it. Those with lower restrictions are at times more competent which allowed for lower restrictions because they don't need to be carried. A lot of the time those with lower restrictions are nicer people, friendlier, more helpful and more capable to which they take others under their wing and teach them.
I also have noticed that many times the new players who have read a guide or watched a video of the fight just prior to trying it for first time are more capable of clearing it than many of those with previous clears because the tactics are fresh in their memory and they are trying harder than those with clears who have become complacent, over-confident and cocky. The PF's that have very high requirements to me are a sign that the PF leader is potentially incompetent, so incompetent that they need to outsource a higher quality set of players to compensate their own incompetence.
In the end the only real solution at the moment is people making their own PF's to counter balance those that have placed silly restrictions or silly requirements. Those with such restrictions yet end up being carried themselves and/or apply one rule for themselves and another for everyone else. I don't see any other way around it until it gets added to DF later.