You are correct, no matter how much people think doping works, with out talent it is meaningless.
That's true. However, given two talented athletes, doping may be the thing that gives the one the edge over the other, unfortunately.
This is more about tearing down the heros of the world than any effective program. If you are exceptional, and can prove it, you become a target for any group with a cool acronym and a funding source. Be careful what devil you stand behind. Groups like USADA make me (and evidently UCI) nervous.