It matters for two reasons.
1. God's word is not so trivial a thing that we should feel at liberty to interchange words.
2. "Wages" and "penalty" are not interchangeable ("wages" does not indicate a punishment whereas "penalty" does).
This is just another example of Calvinism redefining words to exclude the classic or traditional understanding of Scripture.
If this thread is any evidence, Calvinists are illiterate fools (which I know is not the case because not only are there brilliant Calvinistic scholars but I was once a Calvinist and am still brilliant

).
Let's look ar the list so far - Calvinism redefines:
1. "Whole world" as "the elect"
2. "All" as " the elect"
3. "Forsake" as "separate from"
4. "Theory" as "scientific theory"
5. "Doctrine" as "divine truths"
6. And now "wages" as "penalty implying punishment"
You know what they say - tell a Calvinist a word and he'll redefine it, give him a dictionary and he'll philosophize over it

.... they don't really say that but they should.