If people played an MMO like that it would be an endless chain of 7 people knowing what they are doing and 1 guy holding the group back and having to explain it to them. Eventually that 1 guy would know what he's doing and someone would leave and someone new would pop up. There will always be at least 1 person in a group in a day that doesn't know what they are doing. In fact it's more often that you have 6 people who know what they are doing and 2 completely new people and you never get a party with 8 people that know what they are doing.
As such, from the point of view of someone who knows what they are doing, they are being held back, and their time is being wasted.
However, I believe that to be context. If I join a duty finder, I expect to have new people, and I'm cool with it. But if I'm forming a BCB group and it clearly says "Experienced people only", you better be good enough to wing it from some youtube videos, if not I'll end up having to kick you to bring in someone else.
I feel new players should make an effort to form their own groups with more new people and learn it together, like the rest of us did before the videos were made, not get carried by 7 people who have it on farm.
This isn't a single player game, it's not mario. In mario you played by yourself.
I think learning a fight without a video is the way to go to, but I don't inconvenience random people and do it that way. I found a static that was as new as I was and we wiped 100's of times until we figured it out and cleared it. We even ended up with our own strats not in the videos. People run with us and their like "WTF, you do this so complicated", but it doesn't matter because complicated is just how we memorized it, and it works, so we keep doing it that way.
Now when 2.1 came out, I DF'ed stuff knowing nothing, but so was everyone else, there were no videos yet. But in the first week I had done everything except titan em and ifrit.
My main point is, people have the right to request experience from people. If you don't like it, don't run with them. If it's the only group in the party finder, QQ. Take the time to get experience on your own with like minded people. This is an Online Game, we all need to get along. Respect is the path to a good community, Even if it's one sided.