They are out of date. The following is from an article in Runner's World May 2017:
"Let’s be clear: running won’t ruin your knees. ‘Three large studies show long-term endurance running doesn’t seem to damage joint health,’ says Richard Willy, assistant professor of physical therapy at East Carolina University, US.
In fact, runners may have healthier joints than inactive people, says Max R Paquette, an assistant professor of biomechanics at the University of Memphis, US. Running strengthens bone and muscle, and it’s thought it may do the same for cartilage, which cushions joints. And strong muscles – built by running and
strength-training – support joints, so they are less vulnerable to injury."
You can read the whole article here:
https://www.runnersworld.co.uk/health/injury/what-all-runners-need-to-know-about-joint-health