While I think you're just looking for fights now, I mostly agree with you. I don't see much point in celebrating the 100 year anniversary of a building that no longer exists. Anything more than maybe a one line mention in a Tiger note in the paper would be excessive. If the stadium were still there... or even if that shell was still there, that may be different.
What about other historical buildings in Detroit? I'm sure some of them have even been in continuous use for that long.