Blizzard has been pretty busy excluding huge segments of players from WoW over the last several years, it honestly would not surprise me if they continue the trend.

Going that far out of their way just to deal with Prepared, though, I'd say is a long shot ... I'd love to meet the "many" multiboxers with 40-80 accounts. To say there might be 5 of those people sounds like a pretty high estimate to me.

However, I will say that CTM is totally not necessary (unless you want to work around no /follow in battlegrounds). We multiboxed WoW before it was added to the game in the first place...