I think OGB has meltdown and they are terrified he will do it in public or ruin their filming so they give him everything he wants and try to control him every second.
I also think Tim is the primary parent and Jen has zero control over OGB so she is trying to shower him in “fun special mommy time” to get him to have any interest in her.
I would also guess OGB knows the fastest way to get instant attention is to go after Big Baby. He is also probably very sensitive to BB crying.
as far as being in the spectrum, think of typical toddler/pre-school behavior and then ask yourself how many times we have seen OGB ask his parent to look at him or what he is doing or turn towards them to reach for a hug or to be picked up for comfort. They are shitty parents but that is a natural instinct whether the parents respond appropriately or not.
He definitely has a bunch of on the spectrum tendencies. And again, there is absolutely nothing wrong with that. Sometimes when Tim and Jenn or even other people are asking him questions and he just has that blank stare on his face. Is that really just because he's watched his parents talk to the camera his entire life? They ask questions to the camera all the time and nobody answers. Does he think that's what you are supposed to do? Or it is something more? He's clearly overwhelmed when both of his parents rapid fire questions at him, especially when he is focused on something else and they don't even give him the opportunity to answer. Like how we saw with the tea set, sitting on the floor of the room. He was very focused on figuring out what was in the set. Tim and Jenn were both simultaneously asking different questions while Jenn was shoving a crown on his head or a fuzzy cape around his neck. That would make most adults overwhelmed.
I also think the Hot Wheels thing, knowing every make and model of all 200+ Hot Wheels in his collection is something above and beyond what a typical almost 4 year old would focus on. I admit, I do think it's cute, it's clearly his passion, but it's how you see them portray people with autism on TV. I'm specifically thinking about the kid in Atypical with the penguins, but there are other examples.