Any older professors here? How has teaching changed?

I saw a pretty funny tweet the other day stating that students were more motivated when professors used to smoke and drink whiskey in class while scribbling "humanism" on the chalkboard. But, it got me thinking about what academia might have looked like in the past.

So, if there are any older professors on this subreddit, how has teaching changed? Were students lacking motivation, disrespectful, and just as prone to cheating and taking shortcuts? Or were they more serious? I feel like media always depicts students in the past as very studious, and I wonder if that was the reality of the situation. Of course, we still have our motivated students. I always have at least a few of them, and they're a pleasure to work with. I've just noticed that over the years the majority of them have become less serious. They'd rather take shortcuts than actually learn something of value.