This is not a study published in a peer-reviewed journal.
68% of women want a man with a penis longer than 7.5 inches seems very unlikely.
[32% said they would be happiest if their man had 7 . 5 ' 8 . 5'
With the remaining 36% of women wanting 8 . 5'+]
The website is designed to induce anxiety such as the front page below.
An anxious-looking chap has a weight lifted off his shoulders, after his fat transfer and ligament cut (presumably).
[If this study is true, then it\'s inducing.]
Making people anxious about what they lack is the basis of advertising.