Why do most religious conservatives support capitalist ideology?

Plenty of people who are critical of capitalism aren't necessarily advocating for an entirely different system. Rather, they're advocating for dealing with the problems of capitalism head-on, rather than pretending that they don't exist and allowing them to become worse.

Socialism is defined by the elimination of the purely capitalist class, wherin workers own the means of production.

That doesn't necessarily mean that capital isn't assigned for investment based upon market demand or that "EvEryoNe gEts pAId tHE SAmE" like others claim. Socialism in a modern economy can (and likely would be) market based, it just means that shareholders would be entirely made up of employees of a company (obviously this would lead to better conditions for workers, lower wages for executives and no dividend payments to people who aren't working). Taking a more academic definition of capitalism, it's entirely possible to be both socialist and capitalist. Few people are arguing against capitalism in entirety.

Socialism.

Check out how the Anarchists structured their society in Catalonia during the Spanish Civil War. George Orwell fought alongside them and wrote a book about it called Homage To Catalonia, where he describes how utopian it was while it existed. It also deeply soured him on communism, because he saw how the communists betrayed the anarchists during the war and how authoritarian they were compared to the left libertarian anarchists, which likely influenced him when writing Animal Farm.

The war was one of the defining events of his political outlook and a significant part of what led him to write in 1946, "Every line of serious work that I have written since 1936 has been written, directly or indirectly, against totalitarianism and for democratic socialism, as I understand it."