I don't think I would compare that to multiboxing. Yeah, people compain about many things. Yeah, its dumb.

Poker- there is a mathematical approach to know the statistical odds of card pulls and hands. There is also a human element of reading a player. I would argue that reading a player is nearly impossible online. A heads up display of statistics <> a level playing field in this case, though anyone could use any tool (book, program, pocket poker pro :P) to assist them in playing their poker hands- it would not need to be a HUD.

Multiboxing- a player pays for 5 accounts and attempts to come close to achieving what 5 individual people can do. They only gain on a level of communication (no deliberation).

I don't really see the co-relation.