Not even "Jesus is the reason I'm right". The point of the article is that life is like (the authors' conception of) an unsanitized Grimms' fairy tale: it's full of horrors, but has a happy ending, namely an afterlife in paradise and the final defeat of all types of evil. The authors especially love the HCA Little Mermaid, since she manages to acquire a soul and become saved, though I didn't notice any discussion of the homosexuality / transsexuality aspects of that tale (dunno whether they're the type of Christian who object to those things or not).

IMHO in America today there is a significant problem of "fairy-tale thinking", especially among certain American Christian groups. The issue is not that fairy tales teach that a happy ending is possible, but rather that it often comes almost entirely through external deliverance. The same is true within specifically Evangelical theology, in which salvation is entirely by God's grace through your faith, and not at all through your actions. So while some millenials and zoomers struggle with despair about e.g. climate change because they believe that no happy ending is realistically possible, certain other people believe that it will "just work out somehow", e.g. there will be a miracle of technology, or global warming will turn out to be good or whatever, which is IMHO even less helpful.

Anyway, I partially take their point, but I also think it's important to strike a balance where endings are sometimes only partially happy, and usually come about through (physical, emotional, inter-personal) work of the people involved.

It is a reasonable argument for an article in a Christian magazine, and I suspect readers of the magazines would be more likely to expect it than random people going to it from HN.

I do not think the author does a great job of it - it would be better without the rhetorical middle part of the paragraph linking fairy tails to Christianity. Then again, I (though a Christian) may not be the target audience of this magazine either.