If I flag a comment such as "Thanks, that is the answer to my question" with "No longer needed", it will be deleted automatically without any mods looking at it. However, this could be really harmful if done on story-identification questions with no answer, such as this one and this one have no acceptance, just comments that both include "thanks" in them and I could delete with no effort, messing up the duplicate marking.
Stack Exchange developers, can you please turn this off for either all questions on this site, or those tagged with story-identification?