I object most strenuously. The women made poor choices, certainly. But the blame must be placed squarely upon the monstrous sexual predator Hugh Hefner, who is at this moment is suffering the unimaginable consequences of his hated of God.
In the 50's there were already so many women approaching Hefner and Playboy directly to pose that they no longer had to pay calendar photographers etc. for material.
There are only 12 months in a year and often the girl that stroked Hefner's ego got the centerfold.