Like it or not both Cruz and Trump supporters have to work together or niether Trump or Cruz gets elected. Trump has only received about 1/3 of the Republican vote. Half that is only about 16 to 18% of the voters.
With Trumps negatives he is not going to get elected without the Cruz vote. The article posted cites Trumps negatives as to why he will be the worse candidate.
So if you want to keep insulting Cruz supporters and losing more support for your candidate isnt that insanity? Both Trump and Cruz supporters want the same thing for the country. That is a return to sanity.
Your time would be better spent opening up to the people who are most likely to line up with your view point than attacking them.