I think it's mildly offensive to some because they view utility software as a tool that's meant to be invisible. You don't want your hammer singing Christmas carols even if it's harmless. It just feels out of place for this item that's supposed to have a single purpose which otherwise would do one thing and only that one thing. I understand the argument that it's fun, but I think the "it's fun" people are a little too quick to react when others say they don't want it. No one's trying to ruin your good time, it just feels weird. Sometimes I'd rather my tools be impressionless and predictable.