Just to clarify, "evolutionism" is a thing, and it seems to pre-date even Darwin. Historically it referred to a "belief in the mutability of organisms" at a time when there was still a widespread opinion that all organisms still persisted in their ancient forms.
"Permanence And Evolution: An Inquiry Into The Supposed Mutability Of Animal Types"
by Sidney Edward Bouverie Bouverie-Pusey (1882)[*].
"[W]hile Darwinism proper is improbable, evolutionism in any form is as yet unproved; while, on the other hand, the more we investigate the facts of inheritance, the more we are compelled to regard differences so slight, that they would usually be considered casual variations, as within the limits of our existing knowledge strictly permanent."
So to reject evolutionism, is to say that one doesn't think organisms can change in character at all and all the different breeds of dog, cat, cow, horse, sheep, duck, chicken, turkey, rabbit, goldfish, wheat, barley, corn, rye, hops, apples, oranges, grapes and bananas in the world are either individual creations by God or just figments of our imagination.
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[* I found earlier examples, but how could I resist using the one written by someone called Sidney Edward Bouverie Bouverie-Pusey? Now that's a name!]
