It's common for Threat Actors to take collections of compromised websites and assemble them into packages. There are many packages available.
The thing CyberNews discussed was a new "pack" which contains 16,000,000,000 records. This is true, a new "package" does exist. However, like all previous packages, all of the credentials present are from previous compromises or Information Stealer logs. All are publicly available and can found in various places if you dig enough.
If you wanted to download a giant list of hacked website databases, would you want to download all of them individually? Or 200 in 1 giant file? Congratulations, you now understand packages.