Come on, don’t be silly. That’s a Catholic version of “Jesus disagrees with you”.
No matter what version you think it is, the Church disagrees with you. The Church EXPLICITLY says that the Ten Commandments are binding on us. You are claiming they are not. Your opinion is contrary to the teaching of the Church.
The sentence before you quoted says, "the Ten Commandments reveal, in their primordial content, grave obligations. " They are immutable. Yet you know the funny thing. The Catholic Church does not teach us that we must rest and observe Saturday as the Lord’s Holy Day. This fact alone must surely give a clue to any reasonable person that something else is going on.
A reasonable person, having a question about the sabbath, would continue reading the CCC and look to the section on the 3rd Commandment. It answers this very question. It states that the New Covenant fulfills the Old, and the Lord’s Day fulfills the Sabbath, and worship and rest requirements have been transferred to the Lord’s Day. The 3rd Commandment is still in force.
II. THE LORD’S DAY
This is the day which the LORD has made; let us rejoice and be glad in it.103
The day of the Resurrection: the new creation
2174 Jesus rose from the dead "on the first day of the week."104 Because it is the “first day,” the day of Christ’s Resurrection recalls the first creation. Because it is the “eighth day” following the sabbath,105 it symbolizes the new creation ushered in by Christ’s Resurrection. For Christians it has become the first of all days, the first of all feasts, the Lord’s Day (he kuriake hemera, dies dominica) Sunday:
We all gather on the day of the sun, for it is the first day [after the Jewish sabbath, but also the first day] when God, separating matter from darkness, made the world; and on this same day Jesus Christ our Savior rose from the dead.106
Sunday - fulfillment of the sabbath
2175 Sunday is expressly distinguished from the sabbath which it follows chronologically every week; for Christians its ceremonial observance replaces that of the sabbath. In Christ’s Passover, Sunday fulfills the spiritual truth of the Jewish sabbath and announces man’s eternal rest in God. For worship under the Law prepared for the mystery of Christ, and what was done there prefigured some aspects of Christ:107
Those who lived according to the old order of things have come to a new hope, no longer keeping the sabbath, but the Lord’s Day, in which our life is blessed by him and by his death.108
So, those who are defending Catholic legalism, do you stay at home and avoid all travel, work and activity every Saturday? If not, it is worth exploring why you do not.
Following the 10 Commandments is not legalism and anyone who claims such is stating something false. And the Church has moved the requirements for worship and rest to Sunday with the authority given her by God. So Christians are under no requirement to abide by your faulty opinion.