Clearly folks have already outed the story as fictional, but one could have at least made it more believable with better photo shopping and a more realistic number. It's impossible to fit 50,000 cards in a container, let alone 500,000. About 10 minutes of research and some basic math will show a more realistic number to have used would have been 5,000.
Using my Zotac 980Ti AMP Omega box, dimensions are 17" x 11.5" x 4" = 782 in³
cubic inches = 1728 in³
cubic foot roughly = .4525ft³
A 40ft ship container has
2,387ft³
If this was a 40ft long ship container and it held my 980Ti that was fully boxed and ready to sell, it would only hold about 5,275 cards; just cards themselves and not including boxes to pack the cards into. A much closer amount would be around 5,000 980Ti cards.
I doubt many more 3080s would fit inside the container.....but we'll make an educated guess on how many just might.
Not having a RTX card to measure the box; going off the RTX 3080 FE size and how the box appears to be in photos....I'd venture to guess a FE box is approximately: 14" wide x 6.5" tall x 6.5" wide = 591.5in³
Each box would be around .3423ft³
Roughly 6973 RTX 3080 FE GPUs would fit in one 40ft container; just the GPU boxes themselves and not packing boxes they'd be put in. Ideally a more realistic number would 6,500 RTX 3080 FE.