After reading that article, the main takeaways for me were:

Silver has always been considered money for common law transactions

Silver to gold ratio has historically (hundreds of years) been 14-18 oz of silver to 1 oz of gold

A large % of the silver on the planet is temporarily lost in cellphone, computers, etc at dumps and recycle plants and the current cost/oz ($28) is not worth pulling it out.

Only about 1/3 of physical silver is sitting in vaults that the COMEX says is there

COMEX is severely leveraged 10x over the physical oz that they "say" are there (see above point)

....

Buy physical. Stack. Store. And worry no more.