How do you fit a video game's interpretation with its source files?

Given a movie with ambiguous story, you have multiple options to base your interpretation upon: you have the movie itself, the screenplay if available, what the author said in interviews or books, etc... Now, if we take a video game, you also have additional tools: the source code, the installed file names, unused resources, etc. There are of course a few games that expect the player to check these files but that isn't what I want to focus on.

Would you say that all these files have the same authority as the game itself when it comes to interpretations?

I'd like to take an example with SPOILERS FOR LIFE IS STRANGE 1, as this is the game that sparked this topic for me:

The blue butterfly has a special place in this game, it is what starts the whole journey when Max takes a picture of it and Chloe gets shot. It also shown again in the 'Sacrifice Chloe' ending during that same scene. And later during Chloe's burial that butterfly is shown to land on the coffin in front of Max and fly away. There are some scenes that imply that spirit animals are a thing in the in-game universe. After finishing the game my interpretation was that the blue butterfly was Chloe's spirit animal. Now what a surprise to see in the game wiki that the texture file for that butterfly is named 'Spirit_animal_Chloe' !

Is there any room left for interpretation when the source makes it explicit text? Or can the source be reasonably be pushed aside?