Hiking

I'm in this hiking club and they were adamant about not hiking in jeans.

Now I know they're not the best pants but I said it should be fine to wear them on short hikes and it wouldn't kill you but there are better things to wear. They added in further they will kick individuals out for wearing jeans.

Now I personally have done many hikes, even longer hikes wearing jeans with no issues. I want to know your thoughts below on this topic. Am I in the wrong here?