Deadlifts cured my lower back pain. I did take a class on form though.
it's a somewhat similar story across some of my friends who i deadlift with.
a number of of powerlifters we follow on instagram are on regular cbd oil therapy. i'm on lyrica and a truckload of painkillers every day. we still go out and do it. grit your teeth and grind through the pain.
i don't do it as much anymore after i realized that i'm killing my future quality of life for absolutely no financial gain - i'm not selling instagram views, not selling training or equipment and things. but for a long time it was all vanity. none of it is necessary for sitting properly at a desk.
I'm wondering if the stories we hear from more experienced weightlifters like you are because you were pulling, say, 400+ lbs. I don't know, but I think the danger probably goes up exponentially as you cross a threshold of average physical tissue capacity. My all time DL max was 405, and I generally pulled around 365. DLs only made my crappy back feel better.
my physio basically said some people are born with better biomechanics and better structural strength for competitive lifting than others and i'm just not one of them.
if i can get back to at least a 400 lb DL i'd be pretty happy.