Noticing when some scientists speak up in politics and when they choose to stay out of politics is indeed interesting as Bill suggests.
Some people have that kind of personality structure.
A major issue, by the way, is whether the Snake really spoke to Eve. You have heard something of the proposed Kansas science standards. Normally this might be thought a joke, but these have significant support. In 3 minutes it is possible to make one point well. Science cannot prove an historical fact.