Going to go ahead and locked this topic to avoid needing to prune more posts that were derailing from the subject.
As Mirasol indicated in the first reply to this topic, multiboxing is allowed but not supported. This means that Blizzard Support cannot suggest software, or help troubleshoot problems you may encounter.
The subject of whether or not multiboxing should be permitted doesn’t really have a place here. It is permitted.
Any discussion, suggestions, or feedback on that subject should take place in the General Discussion forum (or perhaps one of the PVP forums if the topic is specific to multiboxing as it pertains to in-game combat with others).