I don't at all want to accuse you of the second type of edit, but that type would not be universally seen as an improvement, no matter how well sourced and explained.
But on Wikipedia anything can become a hot button topic. Look at, for example, the amount of discussion about whether to use en dash, em dash, or minus in article titles.
Approx 20,000 words (no consensus): https://en.m.wikipedia.org/wiki/Wikipedia:Village_pump_(poli...
https://en.wikipedia.org/wiki/Special:Search?search=dash&pre...
Here's how it plays out in one article: https://en.wikipedia.org/wiki/Talk:Mexican%E2%80%93American_...
The Arbcom discussion is useful, because it links to some of the Ani threads: https://en.wikipedia.org/w/index.php?title=Wikipedia:Arbitra...
There's about 500,000 words about –,— or -.
There's no way of knowing in advance if you're going to fall into one of these tarpits.
Pfft, amateurs. 500,000 words and no mention of the distinction between a true hyphen (‐), a true minus sign (−), and the vulgar ASCII hyphen‐minus (-).