I have not read the article - I will answer the title question.
“Does Celibacy Contribute to Clerical Sex Abuse?”
Yes and No.
Yes -
If priests were allowed to marry there could/would be a somewhat larger pool of men who could be priests. In this sense, the larger pool, would ahve allowe dthe church more leeway in dealing with the abuses. As it was, with declining numbers of priests, it was difficult to both remove the priests completely and also provide sufficient priests for parish ministerial needs.
So my yes speaks to only one, relatively small, facet within the overall matter at hand.
No -
In every other way the answer is - NO!! Those involved committed immoral and illegal acts. In the secular world, men (and women), married and unmarried, churched and unchurched, right across the economic and social spectrum have committed this crime.
How many times are Children removed by “child services” because of sexual abuse by a parent, or step parent?
So being married does not guarentee that abuse will not occur.
The issues in the matter are large and will need to be addressed. If the Church, in Her wisdom decides to allow for marrid Priests, then so be it. If she does not, then we will learn that God will still provide priests and protect His Church.
Peace
James