Unfamiliar gun.
Unfamiliar situation.
Gun likely not even properly zeroed.
Stress of shooting in a competition for a $100,000 prize.
Surrounded by a camera crew at all times.

Those aren't the best circumstances to be shooting under, and even under the best circumstances, even the best shooters occasionally have a stage that goes epically bad.

Seeklander was willing to risk it all on a show, and things went south. I find it tremendously amusing that all of the cretins on the internet who won't even go out to shoot a local match suddenly start talking about how they're a better shot than he is.