Neither does Cruz.
I really think there is a bit of schizophrenia involved in some Trump supporters. They say they are opposed to the "establishment" at least in part because they promise to support conservative principles while they are running for office, then when elected, they go along with the crowd.
Then they turn around and criticize Cruz because once he was elected, he actually refused to become part of the establishment and stood by his campaign promises, which has resulted in him being unpopular with the establishment they claim to hate and didn't get anything accomplished!
And finally, they use the few times he DID try to work within the system to change or influence bad legislation for the better, they call him a sell-out and part of the "establishment"!
You summarized it well.
It’s called : The Hyper Trump Koolaid Hypocritical Schizophrenia