You're just redefining "religion" so that the claim is a tautology. You could do this with anything: "Everyone has a God (where 'God' means 'favourite thing')"

You're just redefining "religion" so that the claim is a tautology. You could do this with anything: "Everyone has a God (where 'God' means 'favourite thing')" "Everyone believes in the existence of Hell (where 'hell' means 'being unhappy')" "Everyone believes in the possibility of "salvation" (where 'salvation' means 'self-improvement')" Redefining words so that the original sentence is correct is a tad too "charitable", particularly when the new definition is completely at odds with how everyone uses the word.