That’s true. But it wouldn’t be the first time God’s faithful were outnumbered.
It’s time to re-read the Bible’s instructions to the “diaspora” (the “dispersed”) and stop trying to fit into society. Others around us will be blessed by our faithfulness to God. (”Ye are the salt of the earth”, “Let your light so shine among men”, etc.)
We could very well see increase missionary activity coming from the Christian communites in what is now the “global south natiions” to get the Gospel of Jesus out to America and the west rather.