Which still doesn't explain why the writers expect us to sympathize with Jay Sr. so much.
Yes, he treats May and Peter well, but he basically abandoned Jonah to an abuser, and has kind of treated Jonah like shit since he's wandered back into his life.
I'm no Jonah sympathizer, but I'm pretty sure I'd tell any parent who gave me that treatment exactly where and how they could go fuck themselves.
It's like the writers see Jay Sr. the way Dina Lohan sees herself - OMG HE'S A COOL DAD. Please.