Yeah, when I bought mine, Renzo at Di Bartoli didnt seem to think I will need to descale at home.
As long as youre using appropriately filtered water.
I guess if it goes in for a service between 12-24 months old it can be done then by the servicing technician.
I am not sure why it gets discouraged for the home user.
And if you dont descale - do you run the risk of problems down the track ?