Totally Max's fault. He was overtaken, he should have let Ocon go.
The evidence is that Max actually went entirely off the track after the overtake which shows you he was carrying too much speed and Ocon had the correct line and breaking point.
Every one keeps saying Max is past his reckless ways. This and his Charles dive bomb are reminders he's the same old Max. He's just in a car good enough that he doesn't have to drive reckless most of the time.
Every other car had the same problem into T1. It clearly wasn’t an intentional divebomb. It deserved penalizing for not giving the position back, but it wasn’t intentionally pushing him off just because he can.
Maybe a Red Bull should not let itself get overtaken by an Alpine. Max is the first to just overtake during qualifying when he thinks others are too slow.