I would speculate that the major religions, and the Christian subdivisions, want to distinguish themselves from each other in as many ways as possible.
Consider how some protestant churches encouraged their members to stay home on Christmas, even though it was a Sunday. That served a couple purposes in getting attention, for sure, and for distinguishing themselves from Catholics – for sure – who require Sunday and Holyday Mass attendance.
There’s probably a technically more precise answer to the title question.
In the first place, Catholics never discouraged reverence for the name of God.
Catholics are fully engaged in the Ten Commandments. None of them have been repealed.
Recall that even Jesus criticized the Pharisees and Scribes for putting unnecessary burdens on Jewish believers. Whatever the technical explanation is, I’m sure it comes down to an assessment that the Jewish observance was “overboard” to begin with.
And, from the gospels, Jesus was surely critical of the Jewish leaders for obeying the Law in form only, not with and from their hearts.
Last, the New Testament doesn’t seem to dwell on that point. The previous poster noted that the Law was fulfilled in Jesus. It is IN HIM, and WITH HIM, and THROUGH HIM that all honor and glory goes to the Father, in the unity of the Holy Spirit.
The name of Jesus is no less holy than YHWH.
