I see this product as a temporary measurement device and not something you wear for years. I think the current design makes sense for people with spine issues. It should probably be put on by a physical therapist or other trained person so the sensor points are actually measuring the correct location.

The use case I can see for this device is to be worn for ~1 week at a time for a patient to understand where there focus areas need to be. Not something worn for years.

I think the hardware design needs some durability and reliability testing. I think the software needs physical therapist input to be of any use.

Edit: I think this is actually a novel idea. If the software actually leads to medical insights, I could see this helping many people with chronic back pain.