It's not changing the complete sentence, it's recognizing context clues and patterns of language.

"This clearly has nothing to do with racial slurs or otaku culture" = the original intention wasn't about a racial slur and the change isn't about mocking Otaku culture. (This is supported when they go on to explain what the actual original intention would be)

"They probably changed it because “coon” is a slur for black people and they didn’t want to cause any misunderstandings" = upon realizing the relation to a slur they didn't intend, they changed it.

No need for forgiveness, or for passive aggressive condescension.