I almost never make posts like these but in light of the recent TADC bs, I feel like sharing my perspective as someone who mostly only enjoys media that's 10+ years old.
If you can't enjoy a piece of art that you know the end of, you AREN'T enjoying it. You're just consuming it.
This is why media and literary analysis and general reading and critical thinking skills are so important, and I feel like the reactions some people have had to the leaks is so telling about the current state of literacy education it's almost pathetic. I don't engage with a narrative for the twist ending. The peak of a story doesn't usually happen right at the end, anyway. The point of a story isn't to leave you reeling from how good they closed it out, it's to make you examine yourself, the world around you, other people, other STORIES even, systems, etc etc, with a different perspective than you did before. If that's conveyed mostly in the end, great. You can take whatever point it's trying to make away whether you experience it in real time or vicariously through your friend ranting for two hours about how the lamppost was the villain all along (not a spoiler btw).
Disappointment is the result of undue expectations for an experience that was never guaranteed to you. You can still find something good to glean from it. If the story holds up, if you're actually invested in the narrative, seeing spoilers should never actually spoil anything for you.
Take a lit class, I beg of you.