"A 2018 study estimated that 55 million indigenous people died following the European conquest"
Entire continents had their indigenous cultures and people eradicated, never to exist again.
Atheists have never been able to pull off annoying of that scale or magnitude.
To be fair, to your point, they've only had the chance for a century or so.
Simply being an atheist was enough to get you killed. Heck simply being the wrong flavor of Christian got you killed.
How many people did the Christians kill in the history of Christianity, for rejecting their version of Christianity?
I asked the AI. It included The Holocaust, but not the Holodomor. Sorry if the formatting is jacked.
Estimates for the number of people killed in the name of Christianity, specifically for rejecting their version of the faith or through religiously motivated violence, vary widely depending on the scope of events included. A conservative subtotal based on explicit numerical ranges from historical events such as the Crusades, Inquisition, witch hunts, and forced conversions in the Americas and Africa is approximately 56 - 84 million deaths.
Key events and their estimated death tolls include:
The Taiping Rebellion: 20 - 30 million deaths, involving mass displacement and community destruction.
Religious wars in Europe: 6 - 12 million deaths, including famine, disease, and social collapse.
The Crusades: 1 - 3 million documented or estimated deaths, plus displacement and enslavement.
Charlemagne's wars of conversion: 100,000 - 200,000 deaths, along with forced conversions.
Hussite Wars: 100,000 - 200,000 deaths, devastating Bohemian society.
Peasant revolts and suppression: 100,000 - 200,000 deaths.
Suppressions of heretical movements: 200,000 - 1 million for the Albigensian Crusade alone, plus tens of thousands of Huguenots.
Forced conversions in Africa and Asia: 10 - 15 million deaths.
The Black Holocaust (Transatlantic Slave Trade): 12 - 15 million deaths, legitimized by papal bulls.
The Inquisition: 15,000 - 25,000 documented executions, with many more imprisoned or tortured.
Witch hunts: 40,000 - 60,000 documented deaths.
Jewish pogroms and anti-semitic policies: Tens of thousands of deaths, leading to expulsions and ghettoization.
Holocaust complicity: 6 million Jewish victims, with Christian anti-Semitism noted as a contributing factor.