It is not incorrect. I stand by what I said, which was responding directly to the OP’s question about whether these are changeable teachings. The Catholic Church will never offer divorce and remarriage as a solution to failed valid marriages.
There is a separate issue of whether the Eucharistic discipline of withholding Holy Communion from those in invalid marriages can be changed. There is some economia which can be practiced here, and distinguished canonists have expressed the opinion that it is possible to change the discipline. I do not dispute this, but I predict that there will be some theological tap-dancing done in order to change the discipline while retaining the infallible doctrinal teachings on the indissolubility of marriage qnd the sin of adultery.
However, I feel that there is a good chance that we are witness to the unfolding of another Humanae Vitae moment. That is, many pundits expected the teaching on contraception to change, Paul VI was the ideal man to do it, and yet he came out with a document which repudiated those pundits and reaffirmed the teaching exactly as it has always been. However, in the wake of that teaching, for fifty years we have struggled with dim understanding and flagrant flouting of the teachings on procreation and sexuality. There is already much flouting of the teachings on marriage, so I hope that the Holy Father can actually make some progress in reaffirming the Church’s ageless, infallibile doctrines and hold together the bark of Peter steering a treacherous course through the waters of a Culture of Death.