The ordinary Magisterium is what the hierarchy teaches. You are conflating it with infallible Magisterium. The universal ordinary Magisterium are issues on which all Bishops and the Pope are in agreement on, and are infallible. The extraordinary Magisterium are teachings from Ecuмenical Councils or ex cathedra.
We are required to give religious assent to ALL of the Magisterium, whether infallible or not.
Did you not just read from V1 those things that we are bound to believe? He does not say we are to give religious ascent to ALL the Magisterium because THAT makes no sense whatsoever. Read his instructions again read it over and over until you fully understand what he is saying.
A few examples of the Ordinary teachings of the Universal Magisterium that the pope is talking about:
Doctrine of Divine Providence
Limbo
St. John the Baptist born without Original Sin
Doctrine of our Guardian Angels
Doctrine of the Church's Indefectibility
These are all
"...points of doctrine which, with common and constant consent, are held in the Church as truths and as theological conclusions so certain that opposing opinions, though they may not be dubbed heretical, nonetheless, merit some other form of theological censure." - Pope Pius IX, Tuas Libenter