I’m more trying to acknowledge legitimate overlap between the religions, and to note that this overlap is meaningful.)
I agree that there are some beneficial aspects to how others may practice their faith or perhaps how other religions teach or instruct their faithful. For example, one can freely acknowledge that other religions may place a strong emphasis on being kind and helping others and as Catholics we would do well to emulate this in our daily lives.
However, that doesn’t mean that our faith is lacking any fullness of truth or morality, therefore to compensate for this we need to bring in aspects of Buddhism to help Catholics reach a more devout level of love for our brethren.
And whatever rejecting he did were in particular attitudes or approaches to the spiritual life (scribes and Pharisees) but never particular religions. This fact doesn’t interest you?
I don’t think I find it as a credible way to infer that simply because Jesus didn’t openly refute these religions by name, that it somehow gives them a claim of legitimacy.
A Catholic can hold the belief that the Incarnation of God was necessary…But, it doesn’t follow from this belief that other religions cannot be paths toward holiness and eventuating in union with God
That is absolutely incorrect. Simply living a “holy life” doesn’t mean that one can enter the Kingdom of God. And unfortunately this poorly written/grossly misunderstood verse of Lumen Gentium, is one of the reasons for it.
I don’t believe God uses these other religions as a means to bring them home to the Catholic Church. The simple fact that they exist isn’t because God wants people to become Buddhists or Muslims or Jews as a way for them to eventually seek Jesus through the Holy Trinity. I do acknowledge that there are numerous individuals who have left these faiths and became Catholics and they often times speak very highly of their time spent in these religions.
Yet, the Catholic Church has never once encouraged people to become anything but Catholic, in the hope that they might seek holiness and find God using these other paths.
In short, its an absolute error for any Catholic to say to another non-Catholic; that they can remain a Jew or Muslim or Buddhist, etc., and say that by doing so they will enter heaven because Jesus will save them because they are holy or seeking God through those religions.