My two cents on JH.
I feel sorry that he has lost his son. However, I think he let a certain part of his anatomy make decisions for him when it came to EG. I can't forget that he hurt EG's child and is being charged with that and so I feel angry that he did that. I also think that EG hurt Lucas more when JH was away so he wasn't aware of the full extent of the abuse, and she could come up with the "he fell off the monkey bars/roughhousing with cousins" excuses when he spoke to Lucas via facetime or messenger, however he did know. EG is definitely unhinged, bipolar and using meth, well she is a time bomb. She is also manipulative and had JH firmly by his privates. She said jump and he replied "just tell me when to come down". I also think that his family/JO's family maybe have never liked EG and he probably put down their CPS calls as them getting at EG and trying to split them up. I'm sure she used that with him, and he believed what she said. I imagine her saying "They are only doing this to come between us" and him being so controlled by her that he agreed.
Since David Mashburn came onto the scene I think he's had a massive wake up call and he's probably feeling extremely ashamed by his lack of protection for his son. I'm sure he's going over the incidents that were explained away as "boys will be boys" now, and it's hit him that these incidents were at the hands of a sociopathic, manipulative meth head who he didn't really know at all.
I'm angry with him for not protecting Lucas, but I feel sorry for him that he's now going to have to bury his son, who I believe he DID love.