So Jeb Bush is finally going after Donald Trump. Over the past couple of weeks the man who was supposed to be the front-runner has made a series of attacks on the man who is. Strange to say, however, Mr. Bush hasn’t focused on what’s truly vicious and absurd — viciously absurd? — about Mr. Trump’s platform, his implicit racism and his insistence that he would somehow round up 11 million undocumented immigrants and remove them from our soil.

Instead, Mr. Bush has chosen to attack Mr. Trump as a false conservative, a proposition that is supposedly demonstrated by his deviations from current Republican economic orthodoxy: his willingness to raise taxes on the rich, his positive words about universal health care. And that tells you a lot about the dire state of the G.O.P. For the issues the Bush campaign is using to attack its unexpected nemesis are precisely the issues on which Mr. Trump happens to be right, and the Republican establishment has been proved utterly wrong.

To see what I mean, consider what was at stake in the last presidential election, and how things turned out after Mitt Romney lost.

During the campaign, Mr. Romney accused President Obama of favoring redistribution of income from the rich to the poor, and the truth is that Mr. Obama’s re-election did mean a significant move in that direction. Taxes on the top 1 percent went up substantially in 2013, both because some of the Bush tax cuts were allowed to expire and because new taxes associated with Obamacare kicked in. And Obamacare itself, which provides a lot of aid to lower-income families, went into full effect at the beginning of 2014.