No, the author is confused not Dr. Carson. There have been several articles recently that said exactly what Dr. Carson said. GOP donors are confused about where to donate to best provide help to Trump's campaign. (Boston Globe, USA Today, etc.)
With two Super PACs jockeying for position of top outside fundraiser, joint fundraising efforts with the RNC, and individual limits on donations to Trump's campaign, donors are confused about where to donate to make the biggest impact.