“A person must not be identified by their sexual orientation”

A New York archbishop shut down a “gay mass” that was held regularly in a SoHo church.  His explanation why there must not be a distinct worship service for homosexuals–the one mass is for everyone–makes a further interesting point about human identity:

First among the principles of pastoral care is the innate dignity of every person and the respect in which they must be held. Also, of great importance, is the teaching of the Church that a person must not be identified by their sexual orientation. The moral teaching of the Church is that the proper use of our sexual faculty is within a marriage, between a man and a woman, open to the procreation and nurturing of new human life.

Comments David Mills:

That “must not be identified by their sexual orientation,” for example, also means “must not identify themselves by their sexual orientation,” which is to say, must not assume they can or must act upon their desires.

You are not first a homosexual, the archdiocese is saying to the people who attended that Mass. You are first and primarily a human being, and therefore someone called to chastity, and the proper expressions of your sexuality are defined and limited and do not include homosexual practice. Being homosexual is only the personal context in which you are called to be chaste, as being heterosexual is the context for most people. But it is not an identity that brings with it a way of life.

via First Thoughts | A First Things Blog.

How does this help to frame the issue of homosexuality and pastoral care to gay people (that is, to human beings with same sex attraction)?  On the other hand, what is distinctly Catholic about this formulation?