You know how when you're setting your email password, it needs to have at least 8 characters? Because the longer the password, the harder it is to crack.
The importance of security of your email is important for you, sure, but there's Very Important Stuff that has to do with the safety of all of internet and compared to that it's completely insignificant. Nobody cares. This Very Important Stuff is supposed to be locked using a number with over 160 digits. It needs to be perfectly secure.
Well, someone used 4. And I don't mean four digits. The "password" was literally just the number 4.