I don't agree with this at all. Introducing a character this way is pretty standard, and having the character do something like this early makes this event the preexisting skill that he'll use later in the story. It's always better to show a skill in the present and through action, than to tell about it in backstory.
I think you may misunderstand me. Imagine starting chapter one and finding Professor Courage and his doughty sidekick Big George trapped in an airplane with a dead pilot and one engine shot off by the Commie-Nazis. "Don't worry!" says the Professor, and sure enough, he knows how to fly a Gooney Bird with only one engine. They land, deliver the artifact to the Countessa, and then the FBI shows up to arrest them all! End chapter.
That's an exciting opening, of course, but what's the chance the character is going to have the precise skill necessary to survive in this circumstance? That's what I was getting at. There's a fine line between allowing a character to open up a novel in a manner that shows off their skills and having a character who appears (to readers) to develop new skills as the plot demands.
It can work, of course, but I think you need to do it carefully and manage reader expectations. For instance, a reader is going to have an easier believing that someone is a master cat-burglar if you open the book in media res during one of their carefully planned heists than if you open the book with them walking down a street and suddenly needing to use their cat burglar skills to escape a police checkpoint. In the former, the reader is going to expect the skill level of an average cat burglar, in the latter, the skill level of an average pedestrian.
I see no reason at all why this would make the character a ~suave super-spy or genius hacker? He could as easily be a nerd still living in his parent's basement. As for not everyone wanting to read stories about such characters, that's not an argument at all. I don't care what kind of characters you use, many won't want to read about them, but suave spies and genius hackers are remarkably popular characters, so most much like reading about them.
That was my polite way of saying that they're often Mary Sue/Gary Stu-types. That doesn't make them unpopular, of course.