I agree that it's daft. (It would make more sense if the top had a hook for hanging up in the shower).
However I humbly suggest that it's not as daft as this:
http://cgi.ebay.co.uk...ize&item=260676460915
That's a bottle of Avon's Tai Winds Aftershave, just like the one I was given in the mid-1970s. The base is made of very heavy glass but the top is just a push-fit onto a regular bottle top.
The result of that design is that picking it up by the top results in the glass bottle coming away from the ornamental top, with the result (in my case) that it drops into the bathroom sink, cracking it into two.
When I mentioned my accident to my next door neighbours, they said that exactly the same thing had happened to them, so I wonder how many bathroom sinks across the world were destroyed by falling bottles of aftershave!