Jokic will be suspended next season, for about 3 games. Just my speculation.
But he has no right to throw a forearm at anyone: player, ref, fan, staff, owner; at all, when the play is dead.
And when he entered the seating area, that is on him and only him approaching everyone in that area aggressively. 99% of other players yell at the ref to get the ball, so they can inbound quickly. I dont think i've ever seen a player rush up to a crowd like and then try to rip the ball from them, all while another player is right there trying to get back into the play themselves.
He could have shoved IT and would be happy at that.