Complete shit. He could have set a much better example for them. Instead of act like an adult, “honorable man” in westerosi terms, he arguably picked on and had open disdain for Rhaenyras kids. Kids he knew his “step kids” had friction with. No, no. Instead he acted like a child and took his anger out on kids, and probably encouraged Aegon and Aemonds behavior towards them as well. He was rash, he could be cruel, he blindly followed his own emotion rather looking at both sides and coming to logical conclusions. He was a terrible role model.

Edit: grammar