You're comparing apples to dog crap.
How is birth control a moral issue? The Catholic church has even rethought things on this issue. While they still do not approve of a man-made contraceptive, they teach how to figure it out by the woman's cycle.
They have been teaching this since at least 1999.
The teaching of the Catholic Church is that every conjugal act must be open to life. It follows that any method or act which seeks to make conception impossible is wrong. Some methods are worse than others because they are both contraceptive and potentially abortifacient. Natural Family Planning is a licit method -- because still open to life -- to plan a family when there are objectively sound reasons for doing so.
The Catholic Church has always allowed that spouses may obstain from intercourse at any time for whatever reasons they see fit (although there is a general obligation of social justice for married couples to have a sufficient number of children to provide for the propagation of humanity - generally held to be a minimum of 4). And she has always taught that all artifical forms of birth control are immoral.
Where is the change?
Hormonal birth control kills unborn babies. Check your freaking physician's desk reference!