"Don't take it so hard"?
He was the one that overreacted in the first place.
After attempting to clear him up on something, he thought he was correct and started this.
It's extremely immature of him to suddenly take what I said in a hostile light.
Edit:
"LOL
I'm a Pokemon Researcher because of my knowledge of current competitive play. I don't see how knowing the exact details of an extremely outdated glitch (let alone the game itself) is that important. But wait...
... MissningNo. does actually mess up your game, given the fact you get permanent graphical glitches and messed up game data (last time I checked, Hall of Fame and sprites where part of the game haha).
And about it crashing, I had my Blue version get ****ed up as a child because I caught one and stored it in my box. The game wouldn't work anymore. I later realized that this is a normal case for people who stored it in Bill's PC.
So... yeah
"
Completely overreacting.