Im talking about how he treats Ben. They don't interact in the films, but in some of the books and new canon comics, Owen is pretty harsh towards Ben. He's often yelling at him.
There's the story of when Luke and a friend go out and get lost in the wastes, and Kenobi saves them from a dragon. He brings them home safe and sound and Owen flips out and threatens Obi-Wan. Im not sure if this has been retold yet, but this was supposed to be how Luke met Obi-Wan.
Yeah, I understand why he would want to protect Luke, especially from Jedi.
I don't see that; Luke was supposed to be kept by Owen until he was ready to be trained as a Jedi by Ben, yet Owen wrecked the unsaid agreement? That was a contributing factor to his death and Beru's at the hands of Stormtroopers, AFAIK.
And even if Owen was afraid that Luke would go to the Academy, get drafted by the Empire, and then die in its service, that's not a good enough reason to deny him a choice in deciding his future; Luke was destined to do something else with his life (either be an Imperial or be the first of a new batch of Jedi Knights-fortunately he became the latter due to Ben's intervention), not stay on a sandy rock and be a moisture farmer for the rest of his life.