Never mind that "religious involvement" on some level is foundational to grasping the truth of where we came from, what we're doing here and where we're going -- in particular, where we will spend eternity. If caregivers welcome visits from Christians only for the sake of temporal health, so be it. Hearing the gospel of Jesus Christ will undoubtedly draw some elderly folk through the narrow gate to eternal life even if their caregivers are only trying to help them feel a little better.
This is especially good news for long-term-care residents living in facilities run by the spiritually dead. After all, Merck's advice may persuade such operators to ramp up their spiritual offerings, solely to make their lives easier; who cares about their motives, as long as residents are exposed to the gospel?
As the apostle Paul wrote in Philippians 1:15-18, "Some indeed preach Christ even from envy and strife, and some also from good will: The former preach Christ from selfish ambition, not sincerely, supposing to add affliction to my chains; but the latter out of love, knowing that I am appointed for the defense of the gospel. What then? Only that in every way, whether in pretense or in truth, Christ is preached; and in this I rejoice, yes, and will rejoice." Amen!