It means a player of a specific talent that doesn't possess all the abilities a complete player at his position should provide. Pirlo, the wonderful passing midfielder who can't defend, a luxury player.
Messi, the fantastic dribbler and finisher who can't pass from long, doesn't track back, doesn't hold his position, doesn't defend. A luxury player.
You'd gain more as a team from a player who can/is willing to do the things Messi can't/won't do than you'd lose from a dribbler/passer. You'd be able to play an actual midfield, and your attacking players would have clearly defined and infinitely more freedom not playing "sit around, watch what Messi does, and try to respond to it somehow".
Messi is successful in an intensely drilled system that features players coached from teenage years to be cogs in it. Argentina has struggled his entire career trying to be Barcelona so Messi can be Messi.
That's not how national teams work. You don't have time, or the roster ability to make shyt work. You have to do whatever works best for you. When Messi is gone Argentina will be able to do that again and yes, they'll be better.
the fukk are you talking about 
