I mean we absolutely could call out their flaws too, someone with that much power/responsibility is going to do abhorrent things (drone strikes with Obama being an easy one to bring up). Just like the four on Mount Rushmore these things aren’t what we typically call out because they either were “of the times” or not on the same scale as their accomplishments.
Your comment is exactly the point I was trying to make. The world is complex and imperfect, so anyone with the power/responsibility of a president is going to do controversial things.