Not to sound mean, but..... you have no idea what you are talking about do you. I don't recall WoW having a party finder system, or have options to block players out of content. Not one person is blockong anyone from anything. You you just read the title, or have absolutely no idea what the thread is/has been about.
First offb DF and PF are not the same nor remotely the same.
DF- set up to be all inclusive for player to play the game and get content done.
PF- a system for players to form and join groups for like minded reasons. Joining a farm party to farm, joining a learning party to learn, joining a clear party to clear.
It was suppose to be exclusionary. It has been stated many times that having this option doesn't change anything. People who haven't cleared the content are not welcomed in farm parties anyway, this option just enforces it.
Try seeing it less toxic/elitist and more open minded, (way you come off you just read the title and nothing else)
player A forms a farm party- the comment states you need clears.
player b joins looking to clear but says nothing or gives generic replies to stay
players cdefg join and have clears.
Party goes in and "new to duty pops up" there is a shi fesat over who lied, leader forces the group to leave and questions everyone. Player b doesn't communicate it was him. and leader disbands the party.
Player b doesn't get his clear while the rest question each other who lied and start just blisting everyone.
This option prevent that from happening.
It is also harrassment to break player agreements. If a party leader sets up rules for their group, as a player you agree to those rules by joining, which fall under the player agreement part of the ToS. So it is reportable.
Anbd player b could be reported on "disruption of game" due to preventing the players from farming in that group due to player b joining under a lie.
I actually have talk to a gm about this, because I had an incident on the tonberry server where i met the rare troll group jp have. I was in a df party lvling my sch, the blm started to pull making it harder for me to keep the group alive. I politely asked to stop, which the blm started to leroy jenkins in dungeon. The group refused to vote kick him out and group abandon so i was forced to leave, taking a 30 min penalty. GM told me it was considered disruption of gameplay. Pretty much preventing players from doing content as agree'ed upon causing it to stop is considered that because it is preventinbg the people from doing the content the way they set it up.