The religious-like fervor that so many Ph.D. scientists display in defending the premises of evolution is probably due to the fact that if evolution were itself shown to be a pseudo-science, their diplomas, and indeed their careers, would be considered worthless. They've based their entire careers upon the evolutionary dogma. Of course they're going to attack anyone who questions its validity.
The scientist that comes up with a theory to displace evolution will win the Nobel prize and be internationally famous.
If the infamous Discovery Institute were a real scientific endevor, they'd be actually doing science. Rather than pushing lawsuits and press releases.