Correct, the statistical limitations of NNTs are numerous but their fatal flaw in my practice is that they are unnecessary and cumbersome. Why would I need to invert the absolute risk reduction and navigate the conceptual maze of that inversion instead of simply spending time explaining the absolute risk reduction? I have never met a patient who is familiar with NNTs but not risks in their daily lives.
@Stephen has written an excellent post here on why the inferential gymnastics of NNTs are not worth the mental space for clinicians or patients.