Sounds more plausible. Although unless an official source provides the Kanji then it's impossible to definitely rule out what the actual meaning is supposed to be.

This sometimes happens in canonical material from Japan too where names are only ever officially written in Katakana. One example is the character "Akira" from Transformers Zone. Phonetically "Akira" can be a boy or girl's name, the difference lies in which Kanji is used (similar to say Tony vs Toni etc.). Since the name is only ever written in Katakana, it's impossible to tell if Akira is meant to be a boy or girl. And the Akira character is incredibly androgynous in TF Zone!

The Japanese fandom may not have FIRRIB but one endless fan debate that does exist there is whether or not Akira is male or female.