an example of how I hate how trailers now give everything away

I've seen the old movie a few times, and I've read the book twice. The kid coming back and wreaking havoc is more like the climax, whereas this movie looks like it'll be almost the whole thing. I feel like the source material gives enough where the trailer could've made it look like it was mostly about the cat. Then, when the kid gets killed, those unfamiliar with the source material would've been likelier to be surprised, and those of us who are familiar with it would've really been knocked around the head. Just bugs me, think how well that would've helped the movie, but no, instead they have to give away the whole thing in the previews nowadays. Of course it's the fault of the marketing departments. The filmmakers have little say in what's shown. I avoid Star Wars trailers like the plague, especially since Rian Johnson told people they should.