If you had of invested the equivalent amount of money in the Dow Jones index instead of purchasing 10kg of gold and kept it invested from 1920-2024 you would have ~$15 million.
I'm in Canada. 25 years ago my parents bought a home for $130k, they sold it 15 years ago for $500k, it's now listed for $1.1 million. We are so fucked.
In 1920, the average price of gold per troy ounce was $20.68USD[26.2 kB pdf]; 1 Kilogram = 32.15075 Troy ounces. Average house price in the 1920's was $6,296.
$20.68 USD * 32.15075 oz t = $664.87751 USD * 10 = $6648.7751 USD
In 2023, the average price of gold per oz t was $1,940.54 and the average home price was $495,100.
$1,940.54 USD * 32.15075 oz t = $62,389.81641 USD * 10 = $623,898.1641 USD
This meme is credible, excepting errors in my assumption that 1 kilogram of gold is equivalent to 1 kilogram of common material.
They'd actually also be very likely to get you targeted by thieves as well. Even if you tried to keep quiet about them, there would be an entire chain of custody which would be required inform when such a large quantity of gold bullion where sold or bought, as well as their transportation and the transportation's insurance, if you don't get scammed in the process.