I also wrote the same thing in a comment in another community. What you shouldn't forget in this case: Players love to speculate and argue about how to fix/improve/add a part of the game by introducing mechanic X. Other game studios may have tackled/expanded their games in a similar way. It could be an educated (or lucky) guess based on that or some general public description that was available.

Same for the character name - there may be some (unconscious?) pattern that decided the character names so far and the new character was a lucky guess based on that?