The background to the departmental decision is two-fold: improvements in computer aided instruction that allow automatic homework grading; and a long-term decline in permanent faculty.
Rather than fret about the ethics of posting [Warning: obscenity-laced] rants along with more thoughtful criticisms, I no longer post evaluations from courses so large that they need to be taught in these two rooms. My teaching evaluations from such classes are mostly hostile, trust me (though a few are accurate ).