A meaningless gaffe in Bush’s case was the time when he gave a speech and left the podium in the wrong direction and wound up at two locked doors. He tried them both, then gave the audience kind of a goofy grin and went the other way.
In that case, there was no offense given, he did absolutely nothing wrong. But that didn’t stop the video of the event being played over, and over, and over… Obama’s gaffe with the teleprompter was about the equivalent, but didn’t get nearly as much airplay.
But this isn’t a partisan thing. It’s more about narrative. When Presidents do something that fits the narrative of them, If a president is perceived as being stupid, anything he does that reinforces the perception will be jumped on, whether it’s true or not.
For example, Gerald Ford stumbled in public a couple of times early in his Presidency, and got tagged as being a clumsy oaf. Thereafter, any time he did anything that could be remotely construed as clumsy, it was fuel for comedians. Chevy Chase made a career out of stumbling around a set as Ford. At the time, ‘everyone knew’ that Ford was a clumsy oaf.
The reality is far different. Ford was probably the most gifted athlete who ever sat in the White House. He was on the national championship football team for the University of Michigan, and won MVP when they won the championship undefeated. He was an expert level skiier, a 12 handicap in golf, and stayed active in golf, skiing and swimming and other sports right through his mid-80’s. But to this day, people think he was a clumsy oaf, because you can’t shake a meme.
If Obama gets ‘tagged’ with some meme like this, it’ll happen to him too. So far, the press still has a kid gloves treatment going, but at some point that will end. Then he’ll get tagged and bagged, and ‘everyone will know’ something about him that’s probably completely untrue. Just as Bush was seen as ‘stupid’ and Al Gore is seen as ‘smart’, despite the fact that Bush had better grades, higher SAT scores, and was more successful in politics, the military, and business. But once you get labeled, you’re finished.