Believe it or not, 300-person freshman lectures can be done well. They just need a talented instructor who's willing to put in the prep, and good TAs leading sections. And if the university fosters the right culture, the students mostly won't cheat.

But yeah, if the professor is clearly checked out and only interested in his research, and the students are being told that the only purpose of their education is to get a piece of paper to show to potential employers, you'll get a cynical death-spiral.

(I've been on both sides of this, though back when copy-pasting from Wikipedia was the way to cheat.)