It's the same with my taxes - this year I had Astra fully audit my tax returns vs just blindly trusting my CPA as I had in the past, and it both identified and thoroughly explained to me several discrepancies and filing nuances that I never before would have ever learned about.
I think the reality is such that today most people also don't learn or do that much and just abstract things away to more specialized humans at exorbitantly higher price points.