When reviewing (LQ and AFAIR FP) I can recommend deleting an answer as link-only. It's a suggestion that link-only answers are bad and should dissapear from the system.
However, there's no option to flag existing post as link-only and request to create such flag was rejected. This is a big consernation to users, like the urge to get some consensus in flagging them have shown.
Could you please explain, why I can recommend to delete an answer as link-only when I'm reviewing, but I can't flag the answer as such to put it into the review queue? It's really confusing, because access to low-quality and first-posts review queues requires relative low reputation compared to reviewing flags.