The word "Everything" has a literal meaning. That meaning does not have to be interpreted in anyway.How can you possibly say that you did not explain what the word everything means? There it is in black and white.
You interpreted his words to mean more than a single person. "More than a single person" were NOT his exact words. He never used them. Only you did. You (falsely) interpreted.
Interpreting is giving meaning to something, that is not readily apparent, using supporting information and context. For example, the Likud charter that says - "From the river to the sea there will only be Israeli sovereignty" - is a genocidal slogan even though there is no explicit mention of "eliminating everything". In this case we are interpreting this slogan based on Israeli state policy and actions.
"We will eliminate everything" however needs no such interpretation. It's meaning and intent to commit genocide is crystal clear.