JW's dismiss evolution along with many folks because they think evolution is a) a theory not proved and b) is the origin of life.
Facts show that evolution is true but it is simply the terminology of the word "theory".
A scientific theory is a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment. Such fact-supported theories are not "guesses" but reliable accounts of the real world.
Thus the theory of gravity, relativity and evolution fall into the above definition.
Most folks confuse the terminology of "theory" with "hypothesis" but a scientific hypothesis is the initial building block in the scientific method. Many describe it as an "educated guess," based on prior knowledge and observation. A hypothesis also includes an explanation of why the guess may be correct.
Evolution is NOT a "hypothesis" in the above definition.
Then there is the confusion between the origin of life, or more accurately the arrival of living matter from non living matter and evolution which discusses literally no part of that conversation.
The origin of living matter is Abiogenesis and whilst some disagree is mostly "hypothesis" by definition.