IMNSHO they should be closed as subjective - to restate, "do you think I should use X?". Some of them haven't been closed yet, but you shouldn't use that as a precedent for "...and mine shouldn't be closed either".
I have checked the questions you linked to, and most of them are tragically obsolete - some projects have matured since the questions were asked, some have withered; so, there's yet another close reason for those questions: "too localized (in time)" - is it useful to know whether MySuperFrameWork 0.9.4.q was production ready in May 2009?
Note that most of those questions are just that - "it is May 2011, should I use Project XYZ 3.0?"; those are not even real questions, as the askers rarely state their needs, let alone requirements.
So, while most of these questions are closable for three different reasons, I wouldn't flag them - flags have different purpose than close votes, please don't use them as if they were interchangeable.