The Aussies experimented with the blend and found it smashing. Now so do we Americans. Sem-Chard, as it is nicknamed, is now made in California and Washington State. Friendly because they generally are not tannic or astringent, they have a lot of fruit and have a low acidity. Nothing to ruffle anyone's feathers.
Consumers have a hard time with all the names on wine labels.
Often they are in a foreign language. More often they are confusing. The Aussies wanted to simplify the naming of things and make it easier to remember their wines. In Australia there is much overlapping, but the numbers still give the consumer a better chance of remembering the wine. Very soft and full on the palate.