The Italians are clutching their pearls regarding the Marquez-Bagnaia crash, but it's no surprise they are arguing about Alex' vision.
The exact moment determines the verity of all claims. Alex says he didn't see Bagnaia. 100% true, if we're talking about the moment he ran wide. Bez says Alex definitely saw Pecco. Also 100% true, if we're talking about a few milliseconds before impact.
Where and when Alex saw Pecco is the entire issue. We can't see through Alex's eyes and he didn't make any obvious head movements. We'll never know what he did or didn't see, and since the error that started the overtake was not particularly egregious riding, race direction cannot do anything.
FWIW, I think Marquez saw Bagnaia a few dozen meters before the apex, and Alex tried to make Pecco go around the outside. But Pecco had different ideas. Alex's only defense is "I didn't see him". He's not going to claim to the stewards (and his employer) that he's entitled to a certain piece of tarmac until he's overtaken completely. They don't care. However, if Alex argues that he didn't see Pecco, the incident is refocused on Pecco and the risks he took.
Imo, the loss Pecco sustained is not Marquez's problem, though Ducati probably want to make it his problem. Unless Alex rammed Bagnaia intentionally, the focus should be on the risk Bagnaia took to complete an overtake.