Let us see what Church AUTHORITIES have to say about this, and not some dissident Modernist theologians who rant in their little classrooms, yet are unafraid to come out and put in writing what they preach in their classes:
In "Humanae Vitae" the Pope taught, with the divine assistance he enjoys (cf. "Lumen Gentium", n. 25a), what the Church's ordinary Magisterium had always held to be true and right, and what had been reconfirmed by the extraordinary Magisterium of Vatican II. The arguments of those who claim to pass judgment on the basis of their knowledge do not stand up against this Magisterium: between the two teachings there is a substantial difference of quality and not only of degree. The teaching of "Humanae Vitae" is Magisterium - though ordinary - which contains decisions belonging to a divinely established authority (cf. canon 331; "Lumen Gentium" nn. 18a, 20c, 22b, 23c; "Christus Dominus" n. 2a) and exercised in order to interpret and teach (as in our case) the moral norms of human conduct. If he were not the Pope, he would lose his legitimate power and the intrinsic reason for his ministry; at most he could carry out a scholarly magisterium, which, however, would not be of use to the Church and to which he has not been appointed by the Church's Founder; he would lack the supernatural "virtus" of assisting and confirming his brethren in the faith and in the moral law (cf. Lk. 22:32, Mt. 16:29; Vatican I, Dogm. Const. "Pastor Aeternus", DS 3074)...
Archbishop Vincenzo Fagiolo, President of the Pontifical Council for the Interpretation of Legislative Texts
I think he might have spoken to the theologians of LST. One of them is a bishop, who is sooooooo silent about the RH Bill. He made a video about this.
As a fellow Knight shared to me his observation, being a psychologist and all that:
"His expression betrays what he is saying."
Need I name the bishop?