Yeah, forward that one to the Department of Redundancy Department.
But really, these acronyms do kinda take on a life of their own, to the point where we forget that they're acronyms at all. They just become words. I never think that RAM is "Random Access Memory" because I've known that fact for so long that RAM is just RAM now. I don't decompose these acronyms in my brain anymore like I had to when I was learning them.
Not to defend the boneheads in Redmond, but I can see that they wanted to leverage the NT moniker since NT 4.0 did rather well. I doubt 90% of their customers knew what NT stood for when they had NT 4.0 running on their desktops, it was just "Windows NT." So why not use it?