I don't think it's work perfectly to report as spam or low value post because in this case if you can look stated profile post history then you can find his all posts more than 90 percent are just one word for bumping their bounty thread. And it's just too hard keep reporting each of their post as a spam. I am looking for best solution that in this case what is the best way to reporting so this user can be banned or taking appropriate action by moderator.
Report to Moderator -> write "Check this user's post history. All of his posts are spammy one liners. He deservers a ban for spamming"