Just my opinion, but, I feel like a lot of what some ppl are perceiving as Isaiah 'bragging' about things, is him being sarcastic/joking around. Not saying this to insult anyone here but it seems like some are taking his words a lot more seriously than what they might actually be. He's trying to be funny... not very successfully... but the point is he isn't being serious about a lot of what he says.
As always, I want to clarify that I do not think Isaiah is a total angel and completely innocent and without fault.
But, I also don't think he's this egotistical, pompous, smug, self-centered Asshat 2.0.
I think some of the way he behaves has been learned as a form of survival in order to get along w/ having a parent like Asshat. You try to do what you can to stay on his good side and not have him pissed off at you 24/7. We've talked about it before on here that Asshat is probably a nightmare to deal with when the camera is off. One of the reasons being that he is the epitome of a narcissist. That's not an easy thing to deal with.
I think Isaiah is a 19 year old kid who has had to deal with a lot of bullshit growing up. I know I've said it before but it still stands, being made to be the third caregiver of a child like Abbie who has a lot of needs, being made to be another parent with most of the same responsibilities is just wrong. Yes, siblings help out a bit with other siblings. But there's a limit to it and it's not to the same extent as it is appears to be in this situation.
I think A&P getting him expensive toys is part of their way of relieving their guilt of making him the third caregiver. Is it dysfunctional? Yes. But I don't see it as a reason to hate on him.
I think a lot of 19 year old boys can be obnoxious, it's kind of part of the gig. The difference is we're seeing it vlogged and put on social media.