Video games can't cause objectification, it can only reinforce and reproduce a trend already in society. Also, stopping video games from objectifying women will not make objectification itself stop.
It is necessary in some games to show women in a lesser place so one can stick to historical accuracy. Just like you would not expect to see a black knight in King Arthur's court.
It is not the video games themselves that would be objectifying women, but the designers of the female characters in the video games. To an extent, objectification is also done by the consumers that are more likely to purchase games with sexy women in it.
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I spent literally all of my gold in the Witcher 3 having e-sex with hookers.
Any moral underpinnings of your argument or subsequent calls to action are rendered ridiculous and a transparent neo-puritanical attempt to filibuster the joy out of things a certain class of OTHER people who are not you value and enjoy.
All characters (male, female, dragon, whatever) in video games are [literally] objects, not real people. If people understand that they are not real, then they are not being objectified.