I've come to realize that it isn't about right or wrong but who you have in your corner at the end of the day and it's sad really. Robbie didn't bring anything to his relationship with Brad and that put him at a disadvantage from the start. Brad had the wealth, Robbie didn't. Brad had the biological child which is why Will can say all that shit to his dad and sleep without a care in the world for Robbie because his loyalty is with his real father. Stef thinks he can disrespect Robbie because he has the money to ruin him. JJ probably picked Robbie's side simply because he finally gets to be the one getting a parent's attention for once. Will's reaction to his dad's infidelity didn't shock me too much but I expected better from Brad after Millennium I guess.
Thanks for interesting work, Mr Arbour.