@arkandel I do indeed alter systems with problematic mechanics. Example: AD&D 1 & 2e with female characters having a cap on Exceptional Strength (the old 18/100 scale). This actually leaves the strongest possible female character with a To Hit in melee mod 2 points lower than the strongest possible male character; a 10% lesser chance to hit.
I also disallow negative penalties to Mental stats like Intelligence and Wisdom due to race, although I still keep racial bonuses to such.
With older, published modules, I try to balance out bandits and raiders so they're not all of a single 'bad' race like Orcs or Goblins or Gnolls. I try to present antagonist as not inherently bad due to race, but because of active choices the antagonist has made.
So yeah, I do try to GM according to my professed beliefs. And my players respect and appreciate those efforts