They refuse to believe that the squishy middle are the culprits, not the right. There may have been some conservatives who stayed home, but I doubt it was of any statistical significance.
They are looking for someone to blame, and the easiest are those they argued with here.
I think you are correct, guess sticking your head in the sand and screaming is a new fad. I think it is very stange to blame reliable conservative voters for the GOP losing.