If there wasn't much story to be had with those games they wouldn't have made all those manga adaptions.Haha read the comments. Somebody said that there isn't an original 151, it's the original 251, and later on in the conversation, he said that this was true because if it was based on the games there wouldn't be much story. (He didn't read very well, so I told him.)
Also if he used that "t-they had some of the second gen pokemon in the first game b-but scrapped them" argument then he's bad at life.