I don't agree with breeding from very young dogs ...
However,one big advantage of scanning dogs from a year old is to get data onto the EBV database and quickly.
If approx 25% of affected cavaliers are so at a year old,these early onset dogs can be eliminated from breeding programmes and the data sent for the EBV database.
So I think there are some very positive aspects to this.
It will of course also allow stud dogs to be scanned young and put to work...but even at the moment, the current guidelines are no deterrent.