Totally wrong.
I was born, raised, and lived the first 25 years of my life in Arizona. I’m quite familiar with McCain. My sister volunteered for one of his Senate campaigns in the 80s. I certainly disagreed with him on plenty—hence why I didn’t vote for him, for Senator or Pres—but I respected McCain as a patriot who cared about the country. He worked across the aisle with Russ Feingold to pass major campaign finance reform, he was a staunch supporter of veterans’ rights, and wasn’t afraid to call out his own party, as he did when he voted against the Bush tax cuts on 2 occasions, and later did when he voted against Trump’s shitpile of a health care bill.
Trump got away with what he did because people are often gullible and have been drowning in nonsense conspiracy news for decades, to the point where they don’t even know what reality is anymore. He ran a con on easily manipulated people.