did you choose to use the word 'hoax' in your title? Where's the hoax, or even the suggestion of one?
There's an upper limit to the line length over which the ADSL service will work - it's a well known restriction, and BT have for some time been working to develop ways of overcoming it. There's no subterfuge involved, it's a technical issue. The line length criteria is just that, the actual length of the cable between your house and the exchange, including all the twists and turns under and above ground - not the distance as the crow flies.