This is true. Of course, we Catholics are saved by grace/faith. We do put stock in the story of the talents, however. Since it's in the Scripture, don't you think it means something?
Salvation - you can't earn it, but you can lose it.
How can you lose it when you didn't do anything to earn it. It was done when Jesus died for you. You either believe it or not. It is a gift. Would you be insulted if you gave a gift to someone and they tried to pay you for it? What do you think God thinks when he sees someone actually thinking they could add to the most wonderful gift ever given?