He is a brat.
He is obviously mimicking his father or some other adult who talks to his mom in this obnoxious way
His mother needs to teach him to respect her.
That was my thought, too in viewing this. It made me feel sorry for the mother. The gestures, and the “Linda, Linda....” thing are something he sees all the time from whomever is supposed to be the male influence in the family.
I didn’t get “flawless and reasoned” from any of it. Most of the time I couldn’t understand what the kid was saying, and more than once I thought I detected threats to bring down stuff off the table (as in I’ll pull it down if I don’t get my way).
Really, a wholly unpleasant thing to watch IMO.