The fact is that Aikman benefited from a great organization in the early 90s, with a real NFL-caliber coaching staff and solid talent around him at positions that we just completely ignore now. He parlayed that into a HOF career, the last 4 years of which he was average/mediocre at best.
Give him Jason Garrett as an HC, and take away the talent Jimmy and his staff brought in through savvy moves like the Walker trade, and Aikman would retire quietly as a more accurate version of Alex Smith. Of most importance, the Dallas O-line in the early 90s was one of the greatest, if not the greatest, in the history of the NFL. When Emmitt wasn't dominating games, Aikman had much more of a chance to get the ball off.
Some Dallas fans are just unfortunately are too dumb to appreciate Romo, even after going through about 10 years of AWFUL qb play. It's a shame.