Not if you grep locally. How big is this data set? It can't be much bigger than a AAA video game download.
It's 11.9 GB of text (5.3 GB zipped). So smaller than quite a few video game downloads.
fairly low compression rate for zipped ascii, but i guess it is mostly a giant pile of nearly random strings.
In a word: Yes
test the SHA1 of your passwords, not your passwords, and you are safe.
A weak password can still be cracked given the sha1 hash and a dictionary.
If you the type of person to read the article, you aren't likely to submit a basic dictionary password. Either your passwords have more entropy or you know better than to submit them.