Bomarc and Patrickal are right on. Anytime you're confronted with a potentially confusing or complex situation (in this case construction at KLEX), a higher level of mental vigilance is called for, in making sure that all the facts and information are mentally processed correctly.
This exchange is interesting:
05:56:49.9
CAM-2 two two up to six, white data * FMS, flaps twenty. * smokes or
breaks come back here. come into four or two two. on two two
the ILS is out. or the glideslope is, the REILS are out. the uh,
came in the other night it was like [sound similar to audible exhale]
lights are out all over the place.
05:57:07.8
CAM-1 all right.
05:57:08.4
CAM-2 right. remember this runway predicated, before we just go back
to Cincinnati.
The FO doesn't have his facts right about unservicable runway equipment. In some situations this wouldn't matter, but in a potentially confusing or complex enviroment, getting ALL the facts right matters (shows all are focused on getting the facts right). Neither the FO or PIC bother to sort out the nav aids, lighting, and other airport changes created by the construction, though both seem to be aware of the construction. Instead they subject shift right back to emergency procedures, then rapidly on to other preflight items. I believe if they had bothered to sort out the construction details together, the lack of runway lights on 26 would have stood out instantly (should these lights be out?, violates the regs?, are we on the right runway?, etc), and I also think they would have been crosschecking their taxi path and runway alignment.
Bottom line, there appears to have been no mental vigilance regarding a potentially confusing situation. When you're in such a situation, cut the chatter and focus on the details.