Hey! Great follow up!
The committee, at that time, felt that it was more useful to the reader to emphasize Nocturnal Spectator. Braille Formats cannot anticipate every situation. It is the framework for making structural decisions.
Braille formats does not (at this time) use the term “reverse emphasis.” It is wording that I have always used and derived from industry leaders during my own study of braille. It is not directly codified in the 2016 Guidelines. But it is indirectly shown in Sample 4-3. All of the samples and examples in Braille Formats show the correct application of the code guidelines. While some view the examples and samples as merely suggestions (and that approach is valid), I consider them to be just as much a part of the code as the numbered guidelines.
And that is why I answered the way that I did.
When we answer forum questions, many times there are situations that the code books do not address. Our answers come from both our knowledge and our experience. They sometimes go beyond the rules and state how we, as individuals, would handle the excerpt.
Wow! That was long. I think you just wanted to know if the other way was acceptable. (smiley face)
Either way is acceptable. You can choose to empasize the passage and de-emphasize Nocturnal Spectator. Or use reverse emphasis.