The Deer Hunter is also a great example of how movies have changed. I enjoyed the movie but it's just sooooooooo.... daamn.... slooooooooow. Nothing happens for the first hour. That doesn't make it bad, but it goes to show - audiences in 1978 must have had very long attention spans. I can't imagine such a glacially slow movie being a hit if it came out today, when the average person can't pay attention to anything longer than a TikTok video (and even that needs to be played on double speed.)
People's brains have changed.