Earlier quoted context omitted.
it's unlikely we would ever be able to achieve this. Even simulating a single cell at high resolution is a serious challenge.
You seriously underestimate the continuous growth of computer power. And quantum computers after, which are perfect for simulating chemical reactions. What was unthinkable 50 years ago, playing chess better than a human, it's now trivial for a $100 device. And it's not necessarily required that to simulate the growth of a human you'll need to simulate the entirety of chemical reactions in all 50 trillion cells and al…
It's unlikely even if we improved computing hardware many orders of magnitude beyond all reasonable predictions, that the calculations would be able to simulate all the necessary details; most of our simulations now are based on many approximations due to hardware limitations.
As to the question of "what level of fidelity is required to turn a FASTQ of somebody's genome into an accurate model of the resulting human, with some sort of realistic environment also provided", that's so far beyond what is even remotely comprehensible it's not worth speculating about in terms of science fact; it's just fiction.