Even though its pretty clear you are trying to intentionally be an ignorant ass, I'll address your question as though you were a sincere person who actually doesn't quite understand.
Well, it wasn't clear to me, and it's not clear to me that you are the one with abundant understanding and good will here.
The Rogue is the only class in the book that is, to some extent, focused on maximizing their skills...
The 'lucky guy' archetype we are talking about here isn't a character that has focused on maximizing their skills. Compared to the Courtier, Detective, Scholar, Explorer, Cat Burglar, or Street Urchin, this is a character who is ordinary and has no obvert skills. They haven't spent time training. They are obviously less skilled than other's around them, and if they have something they do that is better than the rest of the team, it's usually something innocuous like cooking, farming, or domestic chores. They are the 'normal' character that the skilled character often adopts at the beginning of the story, only to discover they have some inexplicable knack that makes them useful or even essential.
Examples:
Richard in 'Neverwhere'
Saka in 'Avatar: The Last Airbender'
Sam Gamgee from 'The Lord of the Rings'
Arthur Dent in 'Hitchhiker's Guide'
Ron Stoppable from 'Kim Possible'
Jimmy Olsen in Superman
Xander in Buffy the Vampire Slayer
Pretty much any protagonist in a European Fairy Tale who have the clever upstart trope. They've usually got nothing but luck and wits going for them.
Pretty much any member of a 'band of five' or other anime team that serves as 'team mascot' or 'heart'. They aren't as skilled as anyone else on the team, but nonetheless the team needs them to function well.
Pretty much any comic protagonist that saves the day despite incredible ineptness, including Mr. Magoo, Inspector Clouseau, etc. Any example of The Fool, where the foolishness is real and not merely feigned to disguise their true wisdom and power.
Pretty much any comic relief or sidekick paired with a superhero. Dr. Watson depending on how he's portrayed. Anyone travelling with Dr. Who. Etc.
In D&D terms, any character which should be a mere Commoner on the basis of training but which inexplicably is able to function as a hero. Over time, these characters often eventually acquire more explicit powers, but initially they are usually surviving by luck and useful because they have a habit of guessing right, or accidently opening secret panels, and generally bumbling into a solution.
Basically just because you lack the creativity to think of Rogue as being anything but a thief or assassin with a very specific set of skills does not mean the class should be limited to that.
Where did you get that idea from?
The point is, the class we are talking about here is not a Rogue of any sort. We're not talking about 'The Batman'. We're talking about that character that has no apparent skill or superpowers but still gets the better of super-villains anyway.
