His program addresses the core concern of indebtedness here in the US, which is a very valid concern, but IME he becomes overly focused on certain concepts that he doesn't agree with to the detriment of other core concepts that could provide balance, and therefore becomes blind to a more balanced approach in the process. Timesharing is a good example - he rails against timesharing in any and all forms - and therefore attached himself and his organization to a timeshare exit company without performing proper due diligence - advising many of his clients that were in turn duped into losing money in the process. This isn't the first time something like this has occurred with Ramsey.
Bigger picture I've always felt his concepts also largely fail to take into account the time value of money and compound interest/valuations over the long term, substituting these important concepts with an almost singular focus on debt retirement. Again, his concepts have value and he is not wrong with respect to the US consumer's predilection toward consumer debt which hinders personal wealth creation and belays fiscal discipline, but he also fails to recognize that a more balanced approach to using debt strategically for asset acquisitions over the long term that build real wealth is just as important as debt retirement (such as rental properties or other real estate or alternative investments). That said, for folks who have very little fiscal discipline and little to no ability to apply common sense to finances - his program proves very useful. I suppose it's easier for me to see the weaknesses in his system because I went to school for finance and securities analysis, with dual minors in economics and psychology, and have studied economics for most of my life.