I don’t blame Sainz for being frustrated. Honestly I think he had a more impressive race than Leclerc–staying right on him in the first part of the race, making up lot of the time lost to the team’s two terrible pit stops, and the incredible battle with Perez.
But at the end of the day he was out qualified by Charles, and Ferrari can’t afford to lose out on any points.
There’s no need to ‘switch’. They need the freedom to sort it out on track.