Ah fuck I just remembered that episode of Animaniacs where Slappy loses her mind and goes to a retirement home, and Skippy gets put up in a foster home and can only visit Slappy every so often. Can't remember the title of it.
There's that Hey Arnold episode where both Helga and Arnold skip out on thanksgiving with their families because they're unhappy with how their families celebrate it (Arnold's family celebrates it as 4th of July because his grandma is a bit loony, Helga's family once again focuses on her sister the entire time and ignores Helga). They end up missing their families and go back home, and shows that Arnolds family is willing to celebrate the holiday properly (with some flair) and that Helga's family, for all it's fuck ups, were worried sick about her.
I could list off -a lot- of Hey Arnold episodes that are like that, most of them are Helga centric though.
There's a lot of smaller moments in Gravity Falls too. I guess most obvious one is where we learn why Soos hates his birthdays (his dad never shows up for them), and later in the episode Soos realizes that his dad shouldn't matter that much to him since he was never there for them, but that the Pines family are more his family than anything since they're the ones who cared enough to try to celebrate his birthday.
Now, looking back at these examples, I'm not sure why Dobson didn't bring those ones up. -Every- damn 90's kid watched Animaniacs, but maybe he didn't see that episode because it's a later one. I know he watches Gravity Falls, why not bring up it's more mature themes?
I'm just gonna assume he ignored the obvious one (Hey Arnold has a load of episodes like these, as I said), probably because so many of them are Helga-centric so it makes us sympathize with a
BULLY.