In the days of programs taking forever to load or web pages downloading images slowly we knew what technical limitations were there.
Now we know how much sluggishness comes from cruft, downright hostility (tracking), sloppy developer work, etc.. we know this is a human problem and that angers us.
But for non-technical people it hasn't changed too much. Computing wasn't super pleasant 25 years ago and it's not now. Instead of waiting half a minute for Word to load they wait 4-5 seconds for Spotify to load. They were never interested in Notepad or Cmd or Paint. It doesn't bother them that now they open slower than in 1999.