Hot take: The fact that there is only 1 song you ever hear from the Dropkick Murphys tells me they have only 1 good song.
Sure, when I first heard Shipping Off To Boston (did you really think another had a chance?) I tried diving into their music. Did the same w/ Flogging Molly (who are for the record....not as good). DM just has the 1 song.
Follow-up: are DMs concerts just 90 minute renditions of SOTB? I could see a drum solo accompanied by spraying a fire hose of Guinness into the crowd.