Along the same logic, why does anyone care about what Racheal Marsdon says about anything?
Comparing personal life to public life is comparing apples to oranges. Marital infidelity is not correlation to other types of misdeeds, even those on a higher level. The stakes can be riskier, but none the less it is a non-sequitor.
Why do I say this? Think back to the concentration camps as featured in Schindler's List. An frequent adulterer ended up saving many many lives. Faithful (to their spouses) German citizens ended up doing nothing and let atrocities happen.
It is a fallacy to automatically correlate infedelity with misdeeds in other areas of life.