I thought it was great racing, but definitely over the line by both. Norris was dive-bombing, sure, but he had to because Max was continuously moving under braking (a major no-no). The final contact was inevitable, but also bush-league from Max to turn into Norris going into the corner to force contact. And then for good measure ran him off the track on the straight after.
The 10 second penalty was a joke. Lando had his race ruined and Max had no consequences at all because of the gap. Eventually F1 has to hit Max hard for this shit, you can't have drivers intentionally wrecking others and creating dangerous situations without consequences. It's how you end up with another situation like Lewis punting Max in Silverstone that we are lucky didn't kill someone.