No, that's not what he meant - the translation is bad - don't expect google to give you an accurate translationThe author said that it's too bad that the bell, the base, and the tank are not put together the same way as on a Spheroid with threads (as opposed to with o-rings holding them together) the review is very positive and very detailed.
It would be nice to at least have the top cap thread into the tank but since I don't have one YET I can't really comment on it.