Fair enough, I do read every license for any code I use at work.
However, I would certainly think that "we wanted to give a good impression without actually making any changes" is probably closer to the truth. I doubt Berkeley as an institution really cares about accessibility; it sounded like a good thing and policies were enacted without a lot of thought given to the ramifications. If multiple professors signed off that their courses were accessible, then it certainly strikes me that this was a low priority that was largely ignored.
However, I would certainly think that "we wanted to give a good impression without actually making any changes" is probably closer to the truth. I doubt Berkeley as an institution really cares about accessibility; it sounded like a good thing and policies were enacted without a lot of thought given to the ramifications. If multiple professors signed off that their courses were accessible, then it certainly strikes me that this was a low priority that was largely ignored.