Do back stretchers actually work for chronic back pain?

Across the reviewers we read, the honest consensus is that back stretchers can provide temporary relief, improve mobility, and feel good after long periods of sitting, but they don't fix structural issues like herniated discs or scoliosis on their own. r/backpain threads repeatedly note that stretching feels good and may help with muscle tightness, but is best paired with strengthening exercises and, for serious pain, professional treatment.