Besides the managerial reasons stated by muru and Dan, I would also like to add a bit of technical reasoning.
Why are those edits allowed?
Because sometimes it's the details that make the difference.
I very specifically remember two weeks ago, when I was helping an owner of a small VPS setup a piece of software over Discord. To be honest the errors he was ...
muru's answer is all true, but I just want to add some extra information, as the edits you linked are done by a user with the edit privilege.
And before answering your question, I want to explain how edits work first. There are 2 types of edits:
These are edits that can be done by anyone with the edit privilege. They don't need to be reviewed ...
In both cases, it isn't the OP who made the secondary edits you refer to, but another user who was reviewing your suggested edit.
Reviewers other than the OP must have 2000 reputation. At that level, users can make edits:
without having to undergo review,
without having to meet the character limit,
however, without the 2-rep reward.
The help officially ...