So how far behind the race leader do you think "back markers" as you call them should be obliged to give up and go home?
Ocon was racing against other back markers trying to win points for the team that pays his wages. Forget the conspiracy theories, he had every right to try to overtake anyone, whether it was the race leader or another back marker, makes no difference.
I personally think that slower cars getting a blue flag to ensure they get out of the way of faster cars is ridiculous. They.might just as well start the race with just the top ten fastest in qualifying, the other drivers might as well have the Sunday off.