As others have noted, they do. The difference is a high end Chinese copy might cost$800 ish, but the real one is $10k-15K. So they spend a bit extra to laser etch the crystal and buff the Rolex dial crown for $12000 profit.

The article didn’t get it quite right. There’s no tank in the typical use of that word. The gas is pumped under high pressure into voids in rock strata. They wanted to do the same thing in South Sacramento. In theory the only way back out is via the well pipe unless the rock or casing fractures, and here we are.