In the first decade or so of sound cartoons, studios tended to make their films with way too much singing and cuteness and way too little humor. So, I do understand the context for "Barnacle Bill"....but I also didn't need to like it, either. The film is sung from start to finish and really lacks humor and entertainment value when seen today. In fact, my score of 3 reflects the film when seen today--perhaps back in 1930 it would have earned a 5 or 6.
So is the film worth seeing? Well, it all depends. If you are a huge Betty Boop fan or are a big fan of early animation, it's worth seeing--as it's one of the earliest incarnations of this and the Bimbo character. Now it might be hard to see this as being Betty at first--she has long doggy ears and is animated in a stretched out manner. Bimbo also is VERY different. As far as the story goes, well, there isn't much of one--just lots of singing. The only real plus doesn't surprise me--the background animations were first-rate--which is what you should expect from a Fleischer Brothers cartoon.