““He has made a career of trashing people by tweet,” Romney told the New York Times.”
He had a career long before Twitter, you self-absorbed quisling.
What Romney doesn't like is that, as opposed to weasel politicians, Trump says what he means and does what he says. Better one person who bluntly tells the truth about what they think, as opposed to a room full of calculating, self-serving politicians who have made a career of obfuscation.