Biggest example is this one:
"9. Making up words or misspelling hurts - Words that are identified as “unknown language” are given 0.01, which is a huge penalty."
The code in the screenshot for that looks like this:
// Boost (demotion) if the tweet language is not one of user's
// understandable languages, nor interface language.
optional double unknownLanguageBoost = 0.01
That doesn't match the description of "Making up words or misspelling hurts" at all!