Can 1+1=3 exist if 1+1=2 is proven. No!
Creationism exists simply because evolution is not proven, scientifically speaking.
And scientifically speaking, evolution belongs to history instead of science. If you are scientific enough, you should have known that evolution by far can hardly bring up a testable model for scientific predicatability and falsifyability.
A little eraboration, science is about the discovery of existing physics laws and natural rules. They are regarded as laws and rules simply because we speculate that things repeat (yes, REPEAT) themselves such that we can speculate and predict when they repeat. We don't have laws and rules so to speak if things don't repeat.
While history occurred only once, it thus can't be scientific as you can't make history repeat. What evolution does is actually a trick. On the one hand, it claims a repeating process called "evolution by natural selection", on the other what the theory can bring up is historical evidence instead of repeatable speculations and predictions.
For example, when you claim that "dinosaurs evolve to birds", this is just a one time event occurred in history. You don't have a "dinosaurs evolve to birds" process repeat itself as we speak for us to speculate and predict. It is thus all guess work, no matter how evident you think it is. It is because if nothing repeats then no laws nor rules can be summed up.
Worst still, now you can replace "dinosaurs" above with any species or any living organism you know of, you'll notice ToE is all guess work over 99.9999% living organism on earth. That is to say, over 99.9999% living organisms ever existed on earth, we can hardly say that they follow the rule of evolution to evolve, simply because nothing repeats there for such a rule to be scientifically speculatable and predictable. And because all evidnece provided are of one time occurance in the past that whatever you claim can hardly be scientifically falsifyable. That is to say, if your claim is not truth, we have no way to falsify your claim scientifically.
So not only that ToE is not scientific, but also that it is a deceptive piece of art claiming the existing of a repeating process called "natural selection" but can hardly scientically back it up.