Xbox has slipped, and there is a lot of general negativity around Microsoft, but Xbox is probably one of the areas where their reputation is strongest. Microsoft's reputation from other products creeps into the overall perception of the entire company. Some people hate Win95/ME, Vista, Windows 8, clippy, Windows Phone, bundled IE etc etc etc, so they'll speak negatively about Xbox by extension. Microsoft is "evil" yadda yadda yadda. Overall though, I think Xbox was viewed very positively during the 360 because it was a good product. Now they've slipped because of Xbox One, which is of their own doing, so some more of that negativity has crept back in.