Artificer - Artifice is trickery. This is basically calling it a class of liars.
Barbarian - A derogatory insult, apparently.
Bard - As discussed derogatory origins. Unacceptable.
Cleric - Simultaneously administrative and coming from a caste of people that performed brutal religious persecution. Nope.
Druid - Pagan worship is seen as wrong in many modern cultures. We can't celebrate it this way, can we?
Fighter - Only good for violence? Sets the wrong tone for a hero to focus only on violence.
Monk - Have you ever looked into the Venn Diagram of monks and slavery?
Paladin - Speaking of religious persecution … "defenders of the faith" by eliminating other faiths.
Ranger - Hobos. Your hero is a hobo. Seriously?
Sorcerer - As used in the Bible, this is specifically tied to using evil spirits. More unacceptable naughty, naughty diction.
Warlock - More pagans, and these are tied specifically to DEVIL WORSHIP?!?!?!?!? Didn't the 1980s teach us anything?
Wizard - We can't let the KKK terminology thrive in our game anymore.
Artificer means "a skilled craftsman or inventor." Not a class of liars.
Barbarian has been/is still often used as an insult, which is why this thread exists. Berserker/Ravager/Battlerager is less problematic than Barbarian.
Bard has derogatory origins, but isn't really used that way anymore. Even if it was a problem, which it isn't, they could do Minstrel or Lyrist.
"
Cleric" is not a problem. You're pretending like it is.
Druid - That isn't a problem and your statement is ridiculous. Naming a class "druid" isn't supporting paganism and modern world's view of paganism is not relevant.
Fighter is a stupid name, but your argument is stupid, too. D&D doesn't support violence anymore than chess does. I would change "Fighter" to "Warrior" but not because there's any problematic elements of the name, it's just a bad name.
Monk - that argument is not relevant, but Monk could easily be changed to "Martial-Artist."
Paladin -
Here's the definition of paladin for you.
Ranger - You go back and forth between saying we can't call a class a certain name because it's offensive and then start making offensive statements. Also, D&D's rangers originated from Aragorn, if my information is correct.
Sorcerer - That's not the definition of sorcerer, though.
Warlocks - Yes, the 1980's taught us that people who were misinformed about the game overreacted. D&D is popular enough that this isn't a valid concern anymore.
Wizards - The term "wizard" is not owned by white supremacists.
In short, you're grasping at straws for apparently no reason. Most of the class names in D&D don't need to change, and Barbarian's name probably won't change, so probably have nothing to worry about. Even if it was, that's not the end of the world or the hobby.