The difference being that Evolution Theory is striving toward 100% accuracy, while Judeo-Christian creation mythology is 100% unsubstantiated and just fine with it. Which, as you point out, shouldn't be a problem. Live and let live, right? Except, HERE'S the problem...many Creationists would prefer that public schools eschew scientific theory for mythology. Sadly, there has been some success in this regard. That officially makes it a social issue.
People should believe what makes them happy. In fact, believing that there's a god who set evolution in motion is logical. Not my belief, but it defies nothing besides the burden of proof. But let's not write a false narrative where the majority of the vitriol is coming from the agnostic side.
Let me ask you something. If poll results were released tomorrow that showed 46% of Americans believed Zeus and Prometheus crafted mankind out of clay, wouldn't you find that just a little troublesome?