Note that this isn't meant to allow you to land a plane, and honestly I doubt many people should try their hands at it by just reading this one article either. I think in most cases it would be better just to have the ATC help you in how to set the autopilot to land the plane for you, when that's an option.
In addition, air traffic control is not responsible for flying the aircraft, that remains the pilots' task for the time being.
In 2008, there was even a fatal accident in Zürich, Switzerland where the inadequate training of air traffic controllers with regard to piloting an aircraft contributed to the accident (although it was not the cause of the accident):
'The following factors created conditions for the accident or favoured its occurrence:
[…]
* An inadequate understanding within air traffic control of the significance of faults and emergencies on single-engine light aircraft flown by a single pilot in challenging weather conditions.'
http://www.bfu.admin.ch/common/pdf/2146_e.pdf
Swiss air traffic controllers do 25 hours of flight training in small aircraft, so they have a basic idea of piloting an aircraft. In case of a declared or suspected emergency, they will give full priority to the aircraft in need and will try everything to get the necessary support. However, depending on the type of aircraft, it might not be possible to find a pilot or another expert within the necessary time frame to do a safe talk down – and even with a talk down, a safe outcome would never be guaranteed.