Probably because the poster is either:
A. Unaware of the ongoing trademark debate or
B. One of the many subscribers to the theory that the trademark does not necessarily pertain to TESV
Please remember that all we know about the trademark is when it was applied for, what category the product will be, and when the extension expires. None of these known items can be proven to be a connection to TESV and therefore it cannot be ruled out that "Skyrim" refers to a separate game, or that they do not intend to use it.
Eliminate the possible, and whatever is left, no matter how improbable, must be the truth.
Nice try at quoting Doyle, but Sherlock Holmes really said: "Once you eliminate the IMpossible, whatever remains, no matter how improbable, must be the truth."
All we have is circumstantial evidence; therefore we must include all possibilities, including the the possibility that all the evidence that seems to be interrelated is in fact unrelated. I assert that what we do have, however, is compelling enough to believe an announcement is near (see my sig). We could be wrong, but I believe we are not - especially when considering Pete Hines' recent interview which seemed to confirm that an announcement was coming (may or may not be TES:V).
Remember, those of you doubting, this is a thread for speculating TES:V, NOT for speculating Bethesda's next game. There's a big difference there.
I never expected people would be so against a game being set in Skyrim that they'd convince themselves Bethesda's only clearly TES related trademark is for anything but TES V. MMOs, Iphone apps, whatever it's for, it can't possibly be for TES V.
I mean I understand you want to be realistic but come on people, don't let your feelings towards Skyrim cloud your judgment. I personally would be happy to see a TES game take place pretty much anywhere, but I guess certain areas are just not good enough for some people.
I think people just like poking holes in our theories; kinda like blowing our candles out to make theirs shine brighter!