Unpopular opinion: Subtitles detract from the watching experience more than mishearing some words.

I agree if you can otherwise hear fine, but many people who do use subtitles/captions don’t use them out of choice, they use them due to disability: if I don’t have captions I will miss 80% of what is being said, rather than the 5/10% that an abled person would.

And the words appear on screen at a different timing from how the actors speak the words, which further worsens the emotional impact you can receive.

This emotional spoiler-ing certainly happens! (Though I personally don’t mind it too much) What is particularly frustrating is when the captions don’t match what they are saying. Filmmakers, PLEASE don’t do this, I understand that you may want to tweak some lines afterwards, but this just makes it so that my brain has to do additional audio processing, (which is the entire reason for captions in the first place) meaning I either have to mute the movie, or slow it down so I can keep up!