You want me to prove that something is NOT okay? Instead of assuming that everything is OK unless specifically endorsed as "OK" by blizzard? Seems a bit backwards -- normally one assumes that anything not specifically allowed is wrong, unless it is specifically allowed by blizzard. For example, keyboard broadcasting is specifically allowed by Blizzard. That's why we CAN use keyboard multiplexers (and software). Those quotes are here: http://dual-boxing.com/wiki/index.php/GM_Conversations
You were asking me to form an opinion based on your loose paraphrasing, and I would rather form my opinion on something official.

The majority of your quoted statements were about key replication and not specifically about addons. I do see that you have highlighted the parts where they are specifically talking about key events, and of course not mentioning mouse replication -- it apparently hadn't come to their attention or I am sure they would have addressed it.
If you insist, I'd be happy to start a new thread to ask Blizzard GMs "Are out-of-game macros and addons held by the same rules of conduct as in-game macros and addons?" Although, I'm rather sure of what their response will be. I'd be happy to ask, rather than make MORE ridiculous semantic arguments, if you're still confused. Can you honestly say that you'd be confused about what they'd say, or are you just reaching for any leg to stand on?
I think that once again you're avoiding the entire point of my post. The question as stated does not provide any information about the conversation we are having, and is self-serving just like your last thread, in order to get the response from the GM that you want to hear, rather than what is important. The answer to your question would be a very confused "yes." The real question you need to be asking is if, when Souken specified AddOns, he meant it as "in-game AddOns cannot perform this action" or he meant it as "third-party software or hardware of any kind cannot perform this action", and I am likewise rather sure of what the response would be, because he was specifically talking about minimap ping incorrectly performing an additional action. Are YOU just reaching for any leg to stand on?

And yes, I know what minimap pinging is supposed to do. I am not new to the game.
In order for mouse replication to be OK, we'd need several criteria to be met:
1) It doesn't break any of the existing rules in the ToU/Eula (or is specifically given an exemption -- INCLUDING this ambiguous rule: "Anything that Blizzard considers contrary to the "essence" of the Program."
2) It doesn't break any future rules as they are updated (since Blizzard can update the ToU/Eula at any time)

Since neither of those two requisites are met, mouse replication is not OK. However, Keyboard multiplexing has 1) been confirmed not to be contrary to the spirit of the game, and 2) been given a specific exemption (by way of official Blizzard posts) to allow it.
If that is your criteria, then have at it. My opinion on the matter is that they would apply the same rules to the mouse as they would to keyboard and for that matter any other input devices -- and I believe from the comments of others that they feel the same way. I would love to be proven wrong, so ask away. As it stands, I see nothing from an official source that would tell me any differently. Oh, and if mouse replication is not allowed, it would sure throw a wrench into the argument (not saying that this argument was yours, just referring to the argument) that Rob would never put a feature in KeyClone that could get you banned from World of Warcraft.
If 3rd party software INCLUDES any "addons" or "mods", I think we can set that argument to rest, no?
No. Third-party software, by definition and in the context of Blizzard's EULA or Terms of Service/Terms of Use, means any software not written by Blizzard. So it includes... any software ... at all... including in-game or out of game software "addons" or "mods"... that are not a Blizzard product. You even quoted the rest of the paragraph which explains that it is Blizzard's sole discretion whether any are allowed that do certain things that may be considered "cheating" and so on. Nobody is arguing about that.