We have, we just have much, much better conditions for food, hygiene, personnal safety and medicine.

But have worse hormonal health (pmc.ncbi.nlm.nih.gov/articles/PMC7063751/), and are less fit (pmc.ncbi.nlm.nih.gov/articles/PMC4033061/). The flynn effect also seems to decline in some parts of the world: www.sciencedirect.com/science/article/abs/pii/S0160289619301679

It just doesn't compensate the immense gains tech created.

Turns out it's ok to be weaker if you don't have to worry about dying of parasites, malnutrition, cold.

Which, you could conclude, means the individual is weaker, but the species is stronger.