No, I am not sure about the meaning at all. Did they deploy databases that will tend to be a TB in size as something tends to infinity? Or multiple TBs? I don't know if they know about the constant factor since they don't know what the notation mean. Maybe they know what it means and are using it for a clever lie, a 1kB database is O(1TB). So is an empty database.
GGP is trying to be cool, and doing so stripped all meaning from their statement.
English-language-ly speaking the statement you are objecting to is also correct: both you and I managed to get it’s correct meaning.
No?