As per the discussion on this answer, are we to consider that any answer, by default, claims to be the only possible solution? That, unless an answerer either prefaces each and every answer with "This may or may not be the only solution to your problem" or exhaustively defines any other possible solution and prove they wouldn't apply, the resulting answer is open to massive downvotes?
I find that this way of answering is completely unnecessary and does not solve any actual problem. It just creates boilerplate text for answers, which is both a waste of time and a waste of effort. Answers should not be considered, by default, to claim to be the only solution because that just results in nobody answering for fear of being downvoted because there's another solution out there or just ends up with every answer having a beginning paragraph of pointless disclaimer text.
Answers should instead be considered one of many possible solutions by default, not the definitive answer. Arriving at the definitive answer is not and should not be the goal of any answerer.