It's not easy to compare things from different generations because it often comes down to what you see FIRST that holds a certain resonance with viewers - this applies to music and movies - the Beatles - 15-year-olds back then loved it - the parents thought it was absolute shyte. Young people today are not at all interested in them. They are today regarded as an old Boy band - indeed, in music shops that still sell hard copy albums they are placed in the pop music section, not the rock music section because rock got harder and "I Want to Hold Your Hand" sounds like pop. Sure if you grew up with the Beatles you may rail against this notion but it is how it is - the kids are not interested in it. They have their own music for whatever generation they grew up with - maybe Queen or Michael Jackson or today Tayler Swift
This is the same for movies. Good luck getting most young people today to watch any movie in black and white - no matter how good old fogies may think it is. Moreover, the language has shifted as well as acting styles where 1940s and 1950s performances seem very VERY stilted compared to modern acting styles. Women placing a hand on their head and swooning is just so comically silly - even the idea of a "fainting couch" is absurd. If you grew up with it - it is totally fine because you were used to those kinds of performances but in modern times they are laughably bad.
Horror movies are a prime example - Halloween terrified audiences back in the day - often compared alongside Psycho - it was the first "slasher" film of note (even though there is virtually no blood in the entire movie). There is a scene that runs for several minutes following Laurie to the house where the killer, Michael Myers, resides. Back in 1978 the audience was screaming at the screen yelling "Don't go into the house" Today it's a snooze. Even John Carpenter admitted that today that 4-5 minute scene would need to be edited to 20 seconds because audiences have seen it all before. So while Halloween scared people in 1978 - it's tough to claim that it is scary in 2024. And while I will rant that the Dawn of the Dead 78 is much better than the remake - because the original had social commentary and better characters - fat chance most young people who are used to The Walking Dead won't scoff at the outdated effects (which were considered revolutionary in 78 and the most gory film made at that time - now viewed as looking "silly").
Even films that revolutionized camera work from the first half of the 1950s often get extra credit for being "first" at something rather than being best at something - similar to music where the original artist is revered more than the cover artist even when the cover artist is better.
I looked up a listing of the top 1950s movies and saw that the original Godzilla (1954) made the list but they write "
Godzilla technically isn't the
most fun Godzilla movie, and is ultimately a downer, but it holds tremendous historical value for starting such a great film series, and also holds up as a unique (and emotionally devastating) anti-war movie."
And this is probably true but again it's prey to its time and relevance to the people of the 1950s and less so today - modern eyes will view it as laughably bad.
And a quick note on run time - many critics feel that Seven Samurai (1954) was the greatest film of the 1950s and it is 3:27 minutes. 1 minute longer than Killers of the Flower Moon. I think one factor to consider today is that attention spans are far shorter. People need to pay attention to both the movie and their smartphone at the same time. If they put Seven Samurai or Citizen Kane in a movie theatre today it would be bounced within a week. Not enough people have the patience for them. Is that a modern audience problem or a modern audience can get the point quickly where they don't need 20 minutes to get a 2-minute point?