That was fine a decade or two ago when a person might guess the ending to a TV show and blurt it out to their partner on the couch. However, now that small group that guesses the plot correctly will share their predictions on the relevant subreddit which will be picked up by blogs and suddenly everyone knows where you were going.
When that happens, the creatives are faced with the choice to change that ending or just deal with the twists and turns getting spoiled. Westworld is a memorable example of the creators changing the show because fans guessed what was happening next. The end result was that the show didn't make any sense because it prioritized unpredictability over all else and eventually the world and characters didn't make any sense anymore.
I disagree wholeheartedly.
The big problem with every single writer nowadays is a complete and total inability to stick the ending.
I'm really trying very hard to come up with a TV show, book or movie that I thought really stuck the ending in the last 10 years (I'm being generous--in reality I'd even say 30 years). A whole host of the fan theories are WAY better than what practically all current writers crap out.
If I'm being charitable, I'll describe the problem as writers lack varied life experience. If I'm being uncharitable, it's that most writers are just not very intelligent.
That's so very not the case that the person complaining either isn't looking very hard, or else have such narrow taste that they're excluding most works without even considering them.
I just want to add: what's an example of something you think is a really good ending, from any book or show or movie from any time?
This is what ruined Westworld.
Bone (the comic) is a masterpiece, but then, in the last pages, we see the main characters make a decision that goes against the last 1000 pages of their development.
> Note that we do like endings that we didn't expect, as long as they derive naturally from character action.
This, to me, is probably the biggest thing that makes me hate a story:
The character is faced with a situation and reacts in a way contrary to the way we'd expect them to act based on what we've seen so far. It soon becomes obvious they made that decision only to move the plot to a specific ending or scene.