Dear mods. I think it would have been much better if we are to tag this post with with bad_feet since denizens of dear danbooru went their way to create this tag for this sole purpose in the first place. Lately people have started to abuse flag system way too much in my humble opinion.
I respectfully disagree. That tag existing doesn't justify not flagging this picture, mainly because of how the system works. The flagging system exists so people can bring images to the attention of the mods that they feel may not belong here. After that it's their decision if it stays.
Yes, there are images with bad anatomy that have not been deleted, but it's not an excuse. People here have differing standards and I don't think it's fair to tell people to not flag stuff they feel may not have a place here just because a certain tag can be applied to it for pointing out a flaw.