Ok so first thing, Not 1 of these videos are from WOTLK expansion, I se 2 videos from Cataclysm, and their both terrible multiboxers.
1 Video is from MoP and hes abusing the "phasing" so he dont have to deal with more then a certain number of people at the time.
Second, not one video shows even their health pool so you get no indication of how geared they are, Quality is the worste I've seen to, for being recorded when Cataclysm was active it's even worse then most vanilla videos.
Which just goes to prove my first statement right dosen't it?
"In retail you could never gear up that many characters before next expansion came out and rendered you useless, Here, you will be a plague forever."
They may have the numbers but as we all know, the difference between a best geared person and a 2k fresh 80 is rather pretty f'ing big, Take into count that you have 40+ "best geared" characters so once again, They are not even close to doing what multiboxers on warmane is doing.
The biggest issue isn't even Battlegrounds, it's Wintergrasp, because of the VoA raid getting compleately inaccessible for thousands of players from either faction if Multiboxers were to camp it for the whole day.
Intresting note though
https://www.youtube.com/watch?v=F6Lbugaa4pw Listen what Swifty sais at 3:45 into the video.
Last but not least, Retail in comparison to warmane, Blizzard had 12 Million players during WOTLK, Warmane has... less, So the chanse of bumping into a multiboxer was rare to say the least, nothing that occured several times a day.
This can go on and on and on as I said there's a "quadrupel ****ton of arguements against it" all I can say is that I really find it hard to belive that people actually justify the continuation of this behavior, I can't help to se it as them living in denial or just being ignorant about it.