Randy was quite willing to back up his "D&D cred" at GenCon, first offering to tell us about his characters. I wouldn't be surprised if he posts about this issue specifically sometime soon.
As Fenes mentions, this _IS_ more of a DM than player issue. Like I said, pretty much all of the WOTC people play games and I'm not surprised that he has a couple of character(s).
However, if he is seeing this from the standpoint of a player, he's not seeing it properly.
Best way for him to understand it would be to tell him is akin to forcing a Level 1 judge to go in cold when a new set gets released and even then, I doubt the MTG judge would be at as great a disadvantage.
Still, I do suggest reveal keep making his point as calmly as he has because Randy when he was on MTG Randy would change viewpoints/position on the msgboard if the argment was persuasive enough.
"The public knows MTG better than the company? Do I need to remind you of the fiasco that was Crusade vs Glorious Anthem?"