Like I said its more of a starting point to pick your favorite edition from rather than anything definitive. I don't have anything against your friend but I don't consider this to be inherently of rude behavior since there's no such thing as an objective internalization of information. I was also interested in finding the original version and I appreciate you helping me find it.
This chart might be a handy guide for the starting point of OSR. Not saying this is definitive but it might be helpful for someone to pick an edition they like and start from there.
