I’m starting to worry that I was your teacher. Giving out handouts in PostScript is something I have been known to do.
I use some of those. In our classrooms they fill more of the screen than the computer projector, and are easier to write on. I’m not sure why the vintage of the transparency matters unless it has Madonna song lyrics in the margins.
University is not high school, more of the responsibility to learn is on the student. An entertaining class is a nice bonus, but if you want Dara Ó Briain as your lecturer tuition is going to be higher.