You're an idiot.
No, he's right.
Prepper/Renderman came about as a result from the Renderman myth/story. That is why it would still be called Renderman.
If badspot named it Renderman.png somebody would have immediately spotted the name in the launcher, while their Blockland was updating. They would have freaked out and blew the whistle before anybody even saw what it did.
What you and a few others are doing about this whole name thing is like somebody pointing and saying.
"Hey Look! It's a Bengal Tiger!"
and then you say,
"Idiot! It's not a Bengal Tiger it is an Orange Tiger, because it's clearly the color Orange, not the color Bengal!"