If you think about the "stools" that many drummers use, and the positions their bodies are in while drumming, I suppose I could see how the lower back could be affected.
When you're in your 20's and early 30's, the body can compensate; when you're in your 40's and beyond, you really need to take care of your back. Slumped in a stool night after night doesn't seem that healthy to me.
Drummers sit on ‘thrones’ not ‘stools’ although they look alike.
“Slumped in a stool night after night doesn’t seem that healthy to me.”
You’re not kidding. When I was a baby diaper rash was hell!