Do you think there is absolutely no correlation between Torah learning and midos and/or ruchniyus (spirituality)?
Anecdotal evidence (from enough sources that it would be somewhat statistically credible) indicates a slight negative correlation between one’s learning (or better, Klei Kodesh involvement) and the Middos of one’s children.
The only places where I think there would be significant correlation for the person themselves is at the tails (the guy learning 12+ hours a day (excluding davening and meals) on a consistent basis, and the guy who is to lazy/”busy” to open a sefer). Everywhere else I would think there is no correlation, but have no statistical evidence.