Is there any benefit from a young child (10 year old male; pre-puberty) lifting a routine such as WBB1?

The reason for the question is that my son enjoys coming to the gym with me and lifting. I like hanging out with him (we tend to hit the gym together when no one is around).

Anyway - just wondered if there was any point in him lifting?

Would also like to know if there are any dangers with him lifting? I've found conflicting anacdotal stuff on the web.

Keep the faith,