It appears "running out of talent" has become an idiom within the PT community. It's figurative meaning is different than it's literal meaning.
For some, not all, the Figurative meaning is meant as an insult to someone's driving skills. If you've seen it used this way Bad Ron, then I understand why you don't care for it's use.
Now if Sieg wants to describe himself as "running out of talent" certainly no harm no foul. Self deprecation is a good way to ease the tension when you feel uncomfortable about something.
Of course it doesn't make sense literally in the context it was used because Sieg never had any talent to begin with; so he couldn't have run out. But figuratively we knew what he meant.