He should have played it cool. For sure, he attracted attention the way he was walking. If he walked like normal, he might have passed all the checkpoints.
2 pounds of gold, judging by the picture with most of them being a bit flat would mean he has something like 2x2x13 cm(yeah metric system) in his ass, do you think you could walk normally with something like that? The volume might not be a problem but gold is insanely dense, I'm almost sure he will have to see a doctor pretty soon, there is no way in hell he could have kept that in there to much without damage to his sphincter.
It's one thing to carry something less dense that is distributed on a larger surface and a totally different thing to carry around gold. According to the news I've read customs police say carrying around one pound or even 1, 1/2 of cocaine in small bags is doable even to "newbies".
Aren't there any metal detectors on airports?How did he bypass the metal detectors(or maybe he didn't)?

Can't metal detectors detect gold?Is this guy really dumb,or yes he is so dumb?So many questions...

Metal detectors detect gold even easier than other metals, they can even detect your fillings, that's they are set to ignore small amounts by the surface, fillings, small badges, pins or zippers, in his case they were flat and pretty long, the scanner (if activated) would have gone nuts the moment he would have passed through it.
why man do that? I feel sick at the thought. he doesn't know bitcoin yet, if he already knows bitcoin there is no way he could do that, bitcoin can be stored in a crypto wallet, if you sell it to FIAT currency in a matter of minutes it is over and it will be in your bank account. this is the great thing that bitcoin has
Why? Money!!! Money is the reason for which we do almost everything.
As for your solution, after he gets his money in his bank...he will get taxed,which this guy tried to avoid.