These postmodern delusions of "equality" have no place in DnD either. There is no "equality" in DnD. FFS we have classes and levels. Anyone with a modicum of intelligence should be able to figure out that a 1st level character is NOT "equal" to a 5th level character. You want equality? Then YOU go fight the dragon! Take your 1st Level, low-Strength havin' butt to the cave and you fight the dragon. Your strength is not equal to mine. Your hit points are not equal to mine. The dragon will kill you because you're weak. All of that kumbaya bull crap needs to die in a fireball because it has no place in DnD.
There is a great deal of equality in D&D. All characters require the same amounts of XP to level. There are no stat adjustments for gender. There are no race or gender requirements for classes. The default according to more than one edition is that males and females have equal status (though individual societies may have less egalitarian cultures if described as such). 5e has all classes receiving the same proficiency bonus with skills and weapons at the same levels.
Your example of equality meaning that a high level character and a low level character is flawed because it fails to account for the effort put in by the high level character. However, that doesn't mean there is inequality. The low level character could become high-level by putting in that same amount of effort (i.e. earning that same amount of XP).
When you play DnD you find the threat and you kill it. Then you take all of their property and you're a hero. That's DnD!
Except for when you don't and it's still D&D.
Your explanation of what D&D is completely leaves out any non-combat resolution. It is no less D&D if you simply steal and destroy the McGuffin the Lich needs to magically slaughter and reanimate an entire city. It is no less D&D to convince the commander of an enemy legion to turn against his evil lord, or to come to the rescue of a town being pillaged by another of that lord's legions.
The only thing worse than a pedophile is a Social Justice Warrior who makes every perversion their moral imperative. And that's precisely what this thread is about. It's about taking something that is a fringe element of any society and pushing it into the forefront of a game that isn't about social issues and soup kitchens.
I see Social Justice Warrior bandied about on the internet, and it's always sad and funny to me. The last I knew, justice and the pursuit thereof were good things. It's interesting how a term that by the casual definitions of each element could easily be applied to Ghandi, MLK, and Susan B. Anthony has been twisted into a pejorative.
Being LGBT is not a perversion. LGBT persons may not have the numbers that straight, non-trangendered people have, but that makes them no less deserving of respecting their basic human dignity than straight, non-transgendered people. It's also with noting that things can be "fringe" because the non-acceptance of them pushes them to the fringes of society. This is true not just of bad things, but also of good things, because a society's values can cause them to shove aside other values like liberty and privacy.
Oh, and "worse than a pedophile?" Really? Just by weighing the effects of both on the lives that have been touched by them disproves that premise.