Sometimes I don't feel self-confident enough to flag an answer without commenting below it to explain the reason why I flagged it to other reviewers, but I think it's safe to flag link-only answers like this one as "not an answer" without commenting. I was also asked by a moderator to stop using custom flags for link-only answers and flag all link-only answers as not an answer.

Sometimes I don't feel self-confident enough to flag an answer without commenting below it to explain the reason why I flagged it to other reviewers, but I think it's safe to flag link-only answers like this one as "not an answer" without commenting. I was also asked by a moderator to stop using custom flags for link-only answers and use "not an answer" as the reason to flag link-only answers instead.