Anyone who thinks you can just ride a back problem into shape needs to tell Egan Bernal to quit wasting time on physical therapy for his injury induced scoliosis. Heck, he's only a youngster. What do he and his multi-million dollar team know about anything?
Yeah, no. It doesn't work that way. Especially with age and cumulative injuries. Upper body problems due to age, weakness, injury, whatever -- hips, back, neck, shoulders, etc. -- lead to ergonomic problems that lead to further injuries.
Nobody rides themselves into shape from those kinds of injuries and imbalances. But with a younger engine you can compensate just enough to ignore the problem... for now. Eventually it'll catch up with you. Been there, done that, got the Twizzler spine, cocked hips and associated imbalance related issues to show for it.
Do the physical therapy. It'll pay off over the long haul.