"How costly it is to guess SHA256 passwords: https://archive.is/vOn9q (instead of 1000 guesses/second, it's more like ~1197962070743187 guesses/second)"

He seems to have taken this bit from the linked article:

"In 2013, Bitcoin miners collectively performed ≈ 2⁷⁵ SHA-256 hashes"

and divided by the number of seconds in a year to figure out how long how many SHA-256 hashes can be calculated per second. But that's all of the Bitcoin miners in the world (in 2013, but still).

Anyway, use a password manager and don't reuse passwords and this is all moot.