I read it as inferring that an important element of it’s DB-like tone is the high action, that if you lower the action it will sound increasingly like a fretless electric bass, albeit a very large and slightly unergonomic one.
I had one for a year or so, yes it can do DB, but as is so often said, if you want a true DB sound, it’s so much easier to do it on a DB.
The Takamine is beautifully designed and beautifully engineered but as an instrument it is neither one thing or the other. If I had the funds spare I still wouldn’t buy another