I played wow since the start at release in europe.. and still play now not as much as I did.]
I dont understand this negitive reaction to the LFD it had no impact on the community prior to it launch people mainly ran with guild members 100% of the time for both raids and dungeons when they didnt they pugged which took 30 - 45 mintues to get a group most times.
People talked about the same pre and post LFD normally hi, then CC and bye at the end.
After the LFD was released people got to do more instances within a timescale, people got to fit stuff in there time online.. if you didnt have 3 - 4 hours during pre-lfd you might as well not bother in a group.. or getting a group.
The only thing blizzard did wrong post LFD was dungeon design and making it as quick as possible and tank and spank this had nothing to do with LFD just blizzard seeing that is what people wanted.
Personally at low level and max level the LFD is amazing and allows you to get groups.. people will be ******s if they want to be doesnt matter what tool they have.