Do we need those nutrients to be more digestible? Why do we assume that more available nutrients will lead to better health? I would guess there are some nutrients that are beneficial and probably many we already get more than optimal amounts of, and it seems like science is only just now starting to have any clue what these things do.

I'm a bit biased, I don't eat meat nor do I have any interest in lab grown meat for at least a decade or two after it becomes common.