My kid hated school in kindergarten as well. As did I. I didn't get any kind of intervention, and I feel like that set me on a terrible course.

My kid, mercifully, was diagnosed and received intervention in the form of tutoring, therapy, that sort of thing. He still has weapons-grade ADHD, and his handwriting is terrible (dysgraphia), but he seems to have beat the dyslexia and loves reading almost as much as his mother and I do. He's happier, healthier, and has a brighter future.

I really, really hope your friend comes to understand, somehow, that their kid needs intervention, and will benefit tremendously from it.