I found the ff. in the book The Catholic Tradition:
Nov, 1991: the NCCB approves of the RNAB Psalter through a majority vote
May, 1992: the CDWS approves of the RNAB Psalter but says nothing about the lectionary
Jun, 1992: the NCCB sends a lectionary to the CDWS for approval
Jun, 1994: the CDWS revokes approval of the Psalter but says nothing about the lectionary, and later states that the revocation came from the CDF.
The CDF argued that the RNAB Psalter (as well as the Psalter and the NRSV) are “unacceptable for liturgy [and catechesis] because some of their inclusive language was deemed incompatible with the Catholic theological tradition” (234). I will look for more details on that which, also, might explain one reason why some dislike at least some editions of NAB that appeared before 2010.
It’s possible, then, that the problem is not so much a change of rules or direction but groups supporting more inclusive language (according to the book, those who oppose it refer to the ICEL and the CDWS) and those who argue that some of its use is not compatible with Catholic theology (like the CDF).