I'm not at all condoning the software, and agree that it is poorly made, has caused problems for people, and doesnt have the best PR and support staff, but despite this it is not malware. It might be "crapware" that people ought to avoid, but so far hasn't proven to be any more of a trojan than other programs. My main objection here is that Malware is specifically designed to steal and harm, whereas the problems people have had with MacKeeper is not from intent, and instead is from poor programming and buggy code. I think it's a fair stretch to link the two.
Furthermore, despite people's complaints MacKeeper is a popular program that many have installed, but we only hear from those who've had issues with it. The ones who do not have problems just continue on. For instance, my mom installed the software a while ago on her system, and hadn't experienced any issues. Her system has run fine for a while and I only found it when ensuring her system was clean of the latest Flashback threats. She claimed she used it periodically, but didnt see much difference after using it and so stopped, but her system hadn't experienced any problems.
I also leave open the possibility that older versions of MacKeeper were likely far more buggy than newer versions, and many of the complaints could be from those who have the older versions installed. I dont know this for fact since I dont follow the software, but it is a definite possibility.
As for Office, I've installed Office 2011 and cannot find an uninstaller utility either on my system or online, and from Google searches others have found the same--Microsoft did not include a removal tool. I believe there was one for 2004 and 2008, but its not available in 2011. Granted it's a volume license install that did not come on official media which might contain such a utility, but I cannot find it. Online searches bring up third-party uninstallers and Microsoft's KB instructions, but thats it.