Let's take a look at just one well known case.
Hillary Rhodam was a Goldwater supporter during her high school years. It was during this period that she was taken under the wing of a leftist religious figure and turned to the dark side. She kept in contact with this individual for decades.
Look at the makeup of our University campuses today. Conservatives can't even voice their opinions on many of them. Student or university pool funds are used to bring in leftist speakers almost exclusively on many campuses.
I think this article is shilling for the left. It sure doesn't address the reality we have seen over the years.
Certainly when it comes to religion, the data shows that kids are far less likely to be religious when they leave college than when they arrive.