The part in bold is from the supposed “spirit of Vatican 2” rather than the actual Council.
Lumen Gentium 33 :
The laity are gathered together in the People of God and make up the Body of Christ under one head. Whoever they are they are called upon, as living members, to expend all their energy for the growth of the Church and its continuous sanctification, since this very energy is a gift of the Creator and a blessing of the Redeemer.
The lay apostolate, however, is a participation in the salvific mission of the Church itself.
Through their baptism and confirmation all are commissioned to that apostolate by the Lord Himself. Moreover, by the sacraments, especially holy Eucharist, that charity toward God and man which is the soul of the apostolate is communicated and nourished. Now the laity are called in a special way to make the Church present and operative in those places and circumstances where only through them can it become the salt of the earth.
Thus every layman, in virtue of the very gifts bestowed upon him, is at the same time a witness and a living instrument of the mission of the Church itself "according to the measure of Christ’s bestowal".
If every Catholic had to have permission from his bishop before starting a blog, doing a youtube video, a twitter account, a news source then no one would be able to speak out about the faith. We ourselves would no longer be able to defend the faith here even on this forum.
It wasn’t the spirit of Vatican II. Bishop Athansius Schneider said four great things came out of Vatican II: the universal call to holiness,
the role of the laity in witnessing and defending the faith, the family as the domestic Church and the role of Our Lady as the Mother of the Church.
If you think it unnecessary in 2020, look up Catholics for Choice.
They are not defending Catholic truths but worldly evils.
It is also every Catholics responsibility to learn and be obedient to the teachings of the Church, so not to be decieved by those such as Catholics for Choice.