Wrong.

Sean Carroll:

A few weeks ago we were a bit startled to find a “Science Saturday” episode of BH.tv featuring Paul Nelson, an honest-to-God young-Earth creationist. Not really what most of us like to think of as “science.” So there were emails back and forth trying to figure out what went on.

Why would emails be flying back and forth if he didn't care about the creationist?

Carl Zimmer:

But now my experiment’s over. This post is an explanation of why, and how this turn of events has gotten me thinking about the future of science in new media.

Last month Bloggingheads posted a talk between Paul Nelson, a creationist, and Ronald Numbers, a historian of science. They even put the talk on a Saturday, which they set aside for science. (Hence the name Science Saturday.)

Sean Carroll and Carl Zimmer leaving BhTV is what kicked the whole thing off, in case you haven't followed the affair at all, and they both explicitly stated in the articles quoted above that they were cared very much that the creationist was on but that they were willing to accept it was a one-time mistake that wouldn't happen again. How do you interpret that as "not caring"?