There are some other rules on that query for whatever reason never got disclosed. The description in the guide is not exactly accurate.
We provide amnesty on recent posts which give you unlimited editing capabilities on posts that were just created. Anything posted today or yesterday is exempt from the editing rate limits (today and yesterday are defined by the date only and it is not a rolling 48 hour time frame, so posting at 23:59 UTC would effectively cut the amnesty to 24 hours). It would be annoying if you've posted a bunch of questions recently to start getting blocked from editing when people are asking for clarifications.
Only posts with a score greater than -1 count towards the limit. We encourage users to fix closed and downvoted questions all the time, especially when they are blocked from asking.
Both of these criteria apply to both the edit and delete daily rate limits.
Those do leave some holes open, but the checks were really meant to catch vandalism that is removing value from the site while trying to keep out of the way of users who legitimately need to fix things. In the case of this user, only one of the posts edited currently contributes towards the rate limit.
As an aside, to be crystal clear about requirements, strictly speaking, there is no scaling based on reputation either. There is one number that applies to everyone who's subject to the limit (users who don't have the moderator tools privilege).
I will also note that the rate limit does not consider whether you have already edited the same post today or the score of the post. Once you hit the rate limit for the day, you are blocked from all editing for the remainder of the day unless the post is new per point 1 above.