In this context it's being used as tantamount to lying. "Juicing the numbers" implies that something is being misrepresented which is a form of lying.
Yes I read the post (please refer to HN guidelines on asking if people read something) and didn't find anything worthwhile there which is why I mentioned what I did.
Posting here for others asking about lying/juicing since I'm rate limited.
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Lying on financial statements is in fact illegal. Juicing implies that some number is being misrepresented as higher than it otherwise would be which is a form of lying and thus would be illegal.
Obviously there are some gray areas - "we changed how we measure this" or something along those lines can be considered "juicing" or just a matter of changing a calculation to make more sense, but the broad accusation is extraordinary and requires much more evidence than some random person on Twitter saying some things. As an investor in Google (individually and through ETFs) it has no bearing on any investment thesis I have because I don't care what random nobodies on the Internet say and neither should you.