Right. But most people who haven't seen those episodes wouldn't go onto imdb to read about what they haven't seen yet. In fact, they would probably avoid going there if they haven't yet watched the episodes.
There's a difference between seeking out, choosing to click on a source that will tell you aboout what you haven't yet viewed, and the equivilent of someone at a cocktail party telling a group of people whether they wanted to know or not, the end of the movie.
At least at the beginning of your post, you could have put "spoiler alert", so someone could chose to keep reading or not. As is, your first few words, which a person couldn't avoid absorbing, told me more than I wanted to know.