It's not like traditional published works don't go through an editing process. Part of the point of that editing process is there to fix language usage issues.
Also I think "because they don't like a phrase" is a bit of an uncharitable description of what they're doing. You may think it's silly or pedantic, but it's not for us to decide (or even pass judgment on) what other people choose to do with their spare time. I'm sure you and I both have hobbies or whatever that others might think are silly wastes of time (like commenting on HN about silly things like this).
To me it would be like going into an open source project and changing the tab spacing just because it's not the one you use.
This analogy doesn't work because one of Wikipedia's rules is that nobody owns any article, even if they wrote it themselves:
> All Wikipedia pages and articles are edited collaboratively by a community of volunteer contributors. Individual contributors, also called editors, are known as Wikipedians. No one, no matter what, has the right to act as though they are the owner of a particular article (or any part of it).
> Once you have posted it to Wikipedia, you cannot stop anyone from editing text you have written. As each edit page clearly states:
>> Work submitted to Wikipedia can be edited, used, and redistributed—by anyone
> Similarly, by submitting your ideas (for article organization, categorization, style, standards, etc.) to Wikipedia, you allow others to challenge and develop them.
https://en.wikipedia.org/wiki/Wikipedia:Ownership_of_content
Open source software projects are different because each repo is usually controlled by at least one owner who can make decisions based solely on their own preferences. On Wikipedia, every disagreement is put to discussion and there is no article owner who can overrule everyone else.
If we thought it was silly or pedantic you'd be right. But we think it's wrong.
I have no desire to repeat the exhaustive discussion recently on this site about why.
Seeing someone on a crusade to edit other people's work because they don't like a phrase was really distasteful to me. https://news.ycombinator.com/item?id=35838180
Now these edit wars are even more so.