The only ones being insulted are the Cruz voters who think they are owed something.
Trump receive just over 10,000,000 votes out of about 25,000,000 GOP votes. This according to Wikipedia. There were about 22,000,000 dem votes cast. That means Trump received just over 10 million out of 47 million votes cast so far.
That is less than 25% of the votes which would be about 12 million. So he has a long way to go yet before he wins.