First, you have paragraph 100 taken out of context. So it doesn't say what you are forcing it to say.
Second, you skipped the word "authentically". If everybody interpreted scripture AUTHENTICALLY there wound't be 40,000 unauthentic interpretations.
Third, the historic Church has interpreted very few verses, that would freeze dry the Living Word.
Fourth, we don't treat the Bible the same as Muslims treat the Koran. Do you?
Fifth, what if there is an obscure passage whose difficult meaning was causing problems, and not easily resolved? This has happened several times in history. So the Pope steps in and settles the matter, the same as Peter stepped in: Acts 15. He listed to the debates before standing up, where everyone fell silent. The Pope listens to scripture scholars and theologians before making a ruling, he is not a dictator.
CONTEXT
109 In Sacred Scripture, God speaks to man in a human way. To interpret Scripture correctly,
the reader must be attentive to what the human authors truly wanted to affirm, and to what God wanted to reveal to us by their words.75
(it says
the reader, it does not say only the pope)
110 In order to discover
the sacred authors' intention,
the reader must take into account the conditions of their time and culture, the literary genres in use at that time, and the modes of feeling, speaking and narrating then current. "For the fact is that truth is differently presented and expressed in the various types of historical writing, in prophetical and poetical texts, and in other forms of literary expression."76
(the reader)
111 But since Sacred Scripture is inspired, there is another and no less important principle of correct interpretation, without which Scripture would remain a dead letter. "Sacred Scripture must be read and interpreted in the light of the same Spirit
by whom it was written."77
(
the pope did not write them)
The Second Vatican Council indicates three criteria for interpreting Scripture in accordance with the Spirit who inspired it.78
112 1.
Be especially attentive "to the content and unity of the whole Scripture". Different as the books which compose it may be, Scripture is a unity by reason of the unity of God's plan, of which Christ Jesus is the center and heart, open since his Passover.79
The phrase "heart of Christ" can refer to Sacred Scripture, which makes known his heart, closed before the Passion, as the Scripture was obscure. But the Scripture has been opened since the Passion; since those who from then on have understood it, consider and discern in what way the prophecies must be interpreted.80
113 2.
Read the Scripture within "the living Tradition of the whole Church". According to a saying of the Fathers,
Sacred Scripture is written principally in the Church's heart rather than in documents and records, for the Church carries in her Tradition the living memorial of God's Word, and it is the Holy Spirit who gives her the spiritual interpretation of the Scripture (". . . according to the spiritual meaning which the Spirit grants to the Church"81).
(
The magisterium, Pope and Bishops, cannot interpret scripture apart from the Holy Spirit)
Footnotes:
76
DV 12 § 2.
77
DV 12 § 3.
78 Cf.
DV 12 § 4.
79 Cf.
Lk 24:25-27,44-46.
80 St. Thomas Aquinas,
Expos. in Ps. 21,11; cf.
Ps 22:14.
81 Origen,
Hom. in Lev. 5,5

G 12,454D.v
http://www.vatican.va/archive/ccc_css/archive/catechism/p1s1c2a3.htm
Because one paragraph briefly touches on one function of the Magisterium, you automatically assume that the Church teaches no one but the Pope can interpret scripture. This is typical false dichotomous thinking; either/or, not
both/and. "Individual believers" also rose up false teachings, like Arius, Nestorius, Apollinarius and a legion of heretics all challenging the identity of Christ, using "Scripture alone".
If you are going to quote the catechism, please do it properly.