Avengers: ENDGAME Shocker!

When WONDER WOMAN pushed Captain Marvel aside to defeats Thanos in the last battle, my jaw dropped!

Why did so many work so hard to spoil AVENGERS: ENDGAME?
Some people, coming out of the movie,walked up to thosewaiting in line andtold them who died!
I had to stay completely off Social Media, even Yahoo to stay spoiler free
And still had something spoiled for me by a news outlet!

Why do so many people get some perverse enjoyment out of spoiling a popular movie for others?

Maliciousness?  Bullying?The Need to Gossip  Anti-social lack of empathy?
What do you think?