<p>I agree with the answers by @Tim and @amoeba but a dimension in the discussion deserves more elaboration than comments make easy. </p>

<p>The question -- a little perversely, as at the moment of writing you have to read all the links or all the comments to discern that the OP is a party to the threads mentioned -- conflates several issues: various specific reactions to some related threads, on which I won't comment further, and some general questions. </p>

<p>I'll re-phrase the more general issue as two distinct questions. Clearly I am not writing on behalf of the OP. </p>

<ol>
<li><strong>If I see a question or answer that I regard as bad, or not good, what should I do if no-one has pointed that out?</strong> </li>
</ol>

<p>What you can and should do is react with comments explaining what's wrong and what's right or a new answer that explains more fully. (Asking a new and different question and even answering it too might also be a way to clarify a tangled discussion.) It's fine to cross-refer to other answers or questions. Downvoting is within the scope of dissent, although it's generally better to accompany a downvote with an explanation, unless someone has done that already (in which case you can add +1 to their explanatory comment(s)). </p>

<ol start="2">
<li><strong>What is the community to do about questions or answers upvoted more than they deserve? Should there be different rules for voting to cope with this problem?</strong> </li>
</ol>

<p>The question fails at the first hurdle. There is no community (e.g. CV or SE-wide) view on, or meaning to, what are bad questions or answers other than what the community has collectively conveyed through voting, answering and commenting. A large number of upvotes can mean an excellent post or an over-rated post, but such judgments are personal opinion. The situation is no different from the last election in which you voted for a losing candidate: the stupid people won, but that's democracy, and unsurprisingly their view is different. </p>

<p>Even if there were an identifiable community view, a change in voting rules remains a Stack Exchange-wide matter.  </p>
