It is true they are.
You have to handle it very, very carefully but they are so light that after doing one block of flats you can do another straight away rather than having to go for a hot bath and have the rest of the day off because of a bad back!
You certainly cannot throw them around like you would an 18ft pole while cleaning a house. But treated respectfully they are superb.
Thanks for you comments though, it is good to point this out.