Accepts are a way to indicate what worked best for the OP or which answer they personally liked. Sometimes the OP's choice isn't the best one - after all, many people ask questions because they don't know much about the topic, so they can't necessarily be expected to be a good judge. Also, sometimes better answers are posted later after the OP has stopped interacting with the question or no longer has the ability to test solutions.

The score of a post gives a more reliable indication of its quality, as potentially more (and possibly more knowledgeable) people are involved in determining it.

Therefore, I think we should have the accepted answer sort according to score, rather than being pinned to the top.

Accepts are a way to indicate what worked best for the OP or which answer they personally liked. Sometimes the OP's choice isn't the best one - after all, many people ask questions because they don't know much about the topic, so they can't necessarily be expected to be a good judge. Also, sometimes better answers are posted later after the OP has stopped interacting with the question or no longer has the ability to test solutions.

The score of a post gives a more reliable indication of its quality, as potentially more (and possibly more knowledgeable) people are involved in determining it.

Therefore, I think we should have the accepted answer sort according to score, rather than being pinned to the top.

For anyone interested, here's an SEDE query for posts where the accepted answer is outscored by another answer (according to this, on Ask Ubuntu there are around 9000 such posts).