Yes. Impeachment has actually been used far too little. I thought that George W. Bush should have been impeached for signing McCain-Feingold while saying that he thought it was unconstitutional (which SCOTUS later ruled it was, at least partially). It was a violation of his oath of office.
Rick Grenell may run against Newsom. Note that the story doesn’t mention the fact that he’s out as gay, which could actually help him in California. He’d be a powerful candidate for a Republican.