Study uncovers potential key to preventing back pain in runners. A new study examines what may cause chronic back pain in runners and the exercises to help prevent it. The study suggests that runners with weak deep core muscles are at higher risk of developing low back pain. And, unfortunately, most people's deep core muscles aren't nearly as strong as they should be. Source 7d.
Personally I find that running helps with my back pain. People should not be discouraged from being active and finding exercises that work well for them.
Maybe this article is about long distance runners or people running all the time rather than casual joggers. I don't get back pain either but I don't run that often.