Since the dawn of the 20th century, there has always been room for fluff on Broadway as well as artistic endeavors and everything in-between. To not welcome fluff would be to negate Broadway's history. But as with more intellectual, witty, artistic and/or the avant-garde, it can be judged and succeed or fail within the confines of its own sub-genre. More often than not, jukebox musicals fail because they are either poorly constructed, poorly written, misconceived, dull or simply don't have a large enough core audience (or any combination of any or all of those things). But there needs to be enough strength in at least one of those areas to compensate for the lack in other areas, which is why shows like Mamma Mia, Jersey Boys, Beautiful, Rock of Ages and even Motown (the first time around, anyway) were able to succeed despite their shortcomings. And if your jukebox musical is meant to be fluff, you need to find a way to crank up or feature the elements around the book to create something that people will want to see. Mamma Mia had a more diverse song selection with a broader emotional range and more universal appeal (ABBA was a global phenomenon). Rock of Ages also had a nice range in its song selection, but also featured a witty book and was firmly (and wisely) committed to its camp stylings. Motown staged most its catalog of hits with dazzling performances that made you forget about the tissue-paper book scenes as soon as the songs started. Beautiful was a smartly constructed biography and Jersey Boys was near perfect in every detail.
Escape to Margaritaville doesn't really seem to have anything that can compensate enough for its monotonous score and stupid book other than bright colors on stage and a large selection of merchandise in the lobby. It's the Good Vibrations of 2018. It will likely go the way of Baby It's You, Lennon, Soul Doctor, Hot Feet, The Times They Are-a-Changin' and Holler If Ya Hear Me.
"What can you expect from a bunch of seitan worshippers?" - Reginald Tresilian