M5Rick wrote

Piastri was not wholly to blame as Leclerc concluded, Antonelli was moving in on PIA who had nowhere to go and the Italian deserved a penalty more.

dfox wrote

The rules are inconvenient, but clear. That was Antonelli's corner and he could take the apex, Piastri had to yield position but he miscalculated. Piastri missed his braking point. He lost the corner and then tried to make up for it, but he miscalculated. All it was. I hope he gets out of his own head and stops making silly mistakes.

Could Antonelli have avoided it? Probably, but then he likely would have lost place to Piastri, or maybe caused an Antonelli fault crash into leclerc since he was also turning in.