I don't think music or art needs meaning. I don't think music or art should have rules at all, if it does than it only hurts art and music.
I do think it's good, even great to have well thought-out and well presented meaning that influences and shapes music. I love artists like Kendrick Lamar, or emotional punk bands. Some artists/bands are great and well known for their meaningful music, some are great and well known for their great sound, a lot of times both. I want music to be completely natural and free.