...decided that it was a "somewhat random use" of a name.... - do you think he means that the name was inadvertently used twice? Is that clear in the source?
Yes. Reworded.
...Anger took the view that Tolkien's idea of an improved story for the character.. - is "improved" the right word here? More "explained"?
Reworded.
The last line of the Analysis should probably be further up in the section (maybe even touched on in the lead) - i.e. conjecture raised in section and then explained.