You've brought up some very good points and I think the answer lies in the nature of people themselves. I think that creationists think people who accept evolution think like creationists simply because it is familiar to them. For most creationists, there is little understanding of how science actually works and that might be a symptom of poor education.
For instance, the idea that hypotheses must be falsifiable in science might not be common knowledge. There's an assumption that all the evidence is to try and prove something, when all evidence is really to try and disprove something. When the evidence fits in with a current model, then new evidence is looked for to see how accurate the model is. That's why experiments are run to test how well currently accepted concepts, like GR, explain new scenarios. Science is the constant pursuit for knowledge and nothing is definitive until all knowledge of the Universe is known. I imagine not many people would realize this.
So most creationists, when arguing with a person who accepts evolution, and in not understanding science, attempt to argue as if the person were thinking like a creationist because the creationists are familiar with that type of thinking and unfamiliar with the scientific way of thought.
Edited by Izanagi, : No reason given.
It's just some things you never get over. That's just the way it is. You go on through... best as you can. - Matthew Scott
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Marge, just about everything is a sin. (holds up a Bible) Y'ever sat down and read this thing? Technically we're not supposed to go to the bathroom. - Reverend Lovejoy
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You know, I used to think it was awful that life was so unfair. Then I thought, wouldn't it be much worse if life were fair, and all the terrible things that happen to us come because we actually deserve them? So, now I take great comfort in the general hostility and unfairness of the universe. - Marcus Cole