Until last season, women dressed in uniform walked out onto the grid shortly before the race and stood in front of each driver's auto, holding up the driver's number.
The world champion published a grab of a picture of some grid girls from another Instagram user with the message: "Thank you Jesus".
F1 grid girl Rebecca Cooper blasted the recent decision and said feminists should not stop her and others doing what they loved.
"Grid girls" should be brought back for the Russian Grand Prix because "our girls are the most beautiful", says the country's top Formula 1 organiser. "And besides, our girls are the most handsome", he added.
They were meant to be instead replaced by "grid kids" at all 21 of the season's grand prix.More news: SpaceX launches used supply ship on used rocket for NASA
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Kozak disagreed with the "grid kid" switch, saying, "It's wrong at races to lead out children, who are frightened of mechanical things".
Boeri, a lawyer, added, "They look pretty and are part of the Formula 1 landscape".
"In all forms of motor sport there are girls advertising cars harmoniously and pleasantly". They perform during the Grand Prix at events that are in line with their training.
When F1 made a decision to replace grid girls, I certainly didn't think it would end sexism in racing.
The announcement contradicts F1 parent company Liberty Media Corp.'s announcement January that it would abolish the practice of using young female hostesses dressed in uniform to hold up driver numbers or stand by the podium during F1 events. Many are unlikely to be taken up.