<human>: Condense the text into a few key points

I'll try to keep this brief. My friend and his wife, both in their early thirties, are splitting up after being unhappy for years. 

I got roped into getting a ride 4 hours to where they live to help him pack and move in with me.

I underestimated how much shit this guy has, but that is not why I'm here. I'm here because they have a 4 year old kid who is really feeling the brunt of it. Since I got here, my friend has done nothing but yell at this kid at every turn. I know he's really stressed out, and so is his wife. 

Now their son is basically the devil, but he knows his dad is moving out soon and just wants to spend time with him. 

My question is; Would I be way the he'll over the line if I mentioned to him that he needs to give his kid a little positive attention during the day? We've been busy packing up boxes and trailers and trucks and are exhausted, but I can see his son lashing out at him and the wife to the point that I'm even more stressed out and uncomfortable than I already was coming into this mess.
<bot>: buddy is going through divorce and is moving out and is taking a lot of his stress out on his already incredibly misbehaved son. Would I be out of line to bring this up?