When I watched LotR, I was around 20 myself, and a then 20 year old movie (which would be an early 80s movie) would seem like a movie from a completely different era to me.
Today, LotR still seems somewhat fresh to me, and this article and HN comments here seem to agree given that new LotR movies from today are still being linked to this 20 year old one.
What gives? Is it just my age and similar age of the HN crowd? Or is there truly more difference between 1983 and 2003, than between 2003 and 2023?