Question about Aarke PET bottle

I ordered the new bottle because I thought it was screwed. A redesigned bottle came with a screw mechanism, but it does not fix the metal part to the plastic bottle. I don't understand the use of this. The actual connection of the metal part to the bottle is still solved with glue. Loosened is also the key word here, because this again loosened you after a few weeks. Such an expensive product, totally fucked...