Criterion for "Unanswered" question - should it change?

Question

"Unanswered" are considered the questions whose answers have received no upvotes. This creates the following situation: a question gets answered, and answer is accepted by the OP, but the OP has not enough reputation in order to also upvote it. At the same time, the question may be so specific and narrow, that no member with upvoting rights upvotes it, due to lack of interest in the subject matter. Then the list of "unanswered questions" contains also this kind of questions, which in my opinion are not really "unanswered" since they have been indicated as useful by the OP in the only way the OP could indicate that (by the way, can somebody count how many of the questions with no upvoted answers have an answer accepted by the OP?)

I agree that some threshold for upvoting rights must exist (and it is set fairly low anyway, but still creates this kind of situation, especially for questions that come from new users), so shouldn't the "unanswered criterion" change so that questions with accepted but not upvoted answers stop appearing as "unanswered"?

Since this is, I think, a stack-exchange-wide feature, and so perhaps unlikely to change, should we go on a crusade to hunt for these questions and upvote them in order for them to leave the list of unanswered questions?

I believe there is a stronger case to consider these questions as "answered" compared with the questions that are essentially answered in the comments -in the case I am describing, somebody did post an answer.

Answer 1

For future reference:

As of today, here’s how we do it:

• Answered questions have at least one answer with one upvote (or accepted)
• Unanswered questions have no answers with upvotes (or accepted)

Read the full post - it explains the rationale behind these criteria.

Answer 2

Robert Cartainos's answer here states the following:

The "accepted answer" feature was never intended to mark which answer is best or even if the answer is correct. It is, simply stated, the answer that the original author found most useful in solving their problem.

Voting is the most reliable and safe tool to address that a question indeed is answered (in context of content quality).

Today we have:

• 757 zero score accepted answers (isaccepted:1 score:0)
• 5356 answers with zero score (is:answer score:0)
• 9535 unanswered questions.

I believe the key point for us if we want to get the big fish is to focus on more voting* regardless of whether the answer is accepted or not. If the content is good, vote for it!!

I believe it is OK to look for zero-score answers on a subject you understand and help with voting (up and down).

But I wouldn't go either on a crusade or just on zero-score accepted answers.

*some references a, b, c, d.