So if I were Thiel, I'd totally have the company buy gold, then offer my NZ dungeon for safe storage (for a hefty fee, of course) and then whatever the event the dungeon was built for happens .. I guess there's noone there to collect the gold ...
The company is worth $45 billion and it buys $50 million of gold in a time when its business is booming. To me, this seems like nothing special. I guess people find it interesting mainly due to the company being at the crossroads of secret information.
Gold tends to go up with inflation, but down with everything else in minor and financial panics - just look at the beginning of covid, or Sept 2008. And you don't need the gold bars in your vault when markets are relatively functional. This seems to be more a case of some preparedness against real extremes, like war with China, USD collapse, etc.