For all practical purposes, why not?
As I pointed out, you can substitute those definitions of evolutionism (nor, indeed, the word "evolutionism" for the word "evolution") with any reasonable expectation of getting a sensible sentence out of it.
You're being nitty picky for the sake of argument. If Dwise's contention was valid journalists should have the same problem with the term journalism. What's the difference?
They would certainly have a problem if you used the word "journalism" to mean "journal".
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Consider these pairs of sentences, and see which ones are English.
* Evolution has been occurring for billions of years.
* Evolutionism has been occurring for billions of years.
* Darwin came up with an explanation for evolution.
* Darwin came up with an explanation for evolutionism.
* Evolution happens in accordance with Darwin's theory.
* Evolutionism happens in accordance with Darwin's theory.
They are not synonyms.
Edited by Dr Adequate, : No reason given.
Edited by Dr Adequate, : No reason given.