The problem with this language is that it strongly suggests (and other language in the document appears to be even more explicit) that there is a “homosexual charism,” some gift unique to homosexuality that these individuals bring to the Church.
It would have been better to say, “...individuals who bear the cross of the objective disorder of a homosexual orientation nonetheless have gifts and qualities that pertain to them as human persons, apart from their sexual orientation, to give to the Christian community.”
Which is a truism, as we all have inclinations toward sin, but God leaves none of his beloved human creatures without some worthwhile gifts and attributes.
You have hit the nail on the head. The other problem is that it accepts the “gay” movement’s contention that homosexuality defines the individual and then becomes his new identity.
Treating them as a separate group or class in the Church confirms this...while all the time, they are what everybody else is, human beings made in the Image and Likeness of God, called to follow the Lord (and His Law) and to accept individual responsibility for their acceptance of the calling.