Abbot doesn't offer readers any documentation to prove his claim that 70% of our country's Catholic bishops are homosexual. The Homiletic & Pastoral Review article on homosexuality as the underlying cause of the clerical sex abuse scandal is right on target, but the article does not claim that 70% of bishops are homosexual.
I don't know what the situation in the Diocese of Miami is. Perhaps many or most of its priests are homosexual. If so, then that is a problem. But just because one diocese has a high number of gay priests, that doesn't mean that all dioceses do or that most bishops are gay.
Over the last 30 years, only a small percentage of priests and bishops have been accused of sexually abusing minors. I think that figure is under 5%. If a majority of bishops and priests were gay, then the percentage of priests and bishops accused of abuse would be much higher. And, don't forget that not every priest who has been accused of abuse is guilty.
Finally, as most Catholics already know, the Vatican is currently conducting an investigation of all of the seminaries in the U.S. When the visitations and investigation are over, "lavender" seminaries will be purged or closed. This will solve much of the problem.
You're correct, according to the John Jay study: "The dioceses, eparchies, and religious institutes reported information on 4,392 individuals who had been the subject of at least one allegation of sexual abuse while serving in ecclesial ministry between 1950 and 2002. We found that this count of priests with allegations was 4.2 % of all diocesan priests in ministry for that time period and 2.7 % of all religious priests in ministry in the same period."
And by the time the story became national news, the peak of the allegations was a generation earlier: "When the events of sexual abuse were displayed as yearly counts by date of occurrence over the 52 years from 1950 to 2002, we observed a gradual but steady increase until the early 1980s and then a more marked, but equally steady decrease."