Perhaps more accurate is that there is no one root cause, but a bunch of contributing factors.

I had a quick search to find my favourite article on this one, it might be https://willgallego.com/2018/04/02/no-seriously-root-cause-i... as it demolishes Five Whys but https://www.kitchensoap.com/2012/02/10/each-necessary-but-on... is a classic