The answer to your argument is quite simple.
Fundamentalists are to Christianity as the Black Panthers are to Civil Rights. Very few people would oppose an email deriding the Black Panthers for their militarism, while the world would obviously throw a fit over criticising civil rights in general. The situation is the same here. Mirecki's email singles out the fundamentalists in the state legislature. There are moderates, mind you - an overwhelming majority of Christians (including the entire Catholic church) see little or no tension between creationism and evolution. Those in our state legislature looking to change science until it is no longer science, however, are in that looney minority who believe things like the world is only a little over 4,000 years old and that Genesis is to be taken literally word for word.