I agree. Let it be a place for topics such as the recent one about internet neutrality, or about scientific stuff, documentaries etc.
It would be great to keep politics out of it. But keeping politics out of it would also mean removal of topics about gender or climate change. If keeping such topics out is not possible and the policy will be used only to remove topics about victims of communism or abortion or school vouchers for example, then many might feel the policy is unfair. In that case, a complete removal of the watercooler category would be welcomed rather than a policy of selective political discussion being allowed, with some political topics removed while others not. That would completely miss the point of the rule.