These trailers get pretty much everything right. There are millions of these on Youtube and they're all good. Here are just 2 examples...
"The Mandalorian" https://youtu.be/QNnzO7o5ggc?si=OofMWYhkOpo-voiz
"Lost in Space" https://youtu.be/QNnzO7o5ggc?si=OofMWYhkOpo-voiz
No... I completely disagree. I have seen those trailers, they look terrible to me.
Every shot is just a 2 second still of a character, with a little 3D applied to it. It moves shot-to-shot, no dialogue (because if AI did dialogue it would be a monstrosity) No real action sequences. It's not a real trailer. It's still frames, made by AI image generation, which make one tiny little turn of the head. You aren't seeing any concise plot, its all visuals. It's just giving you a 'look' but its all wrong. The Starcraft trailer had protoss with NOSES. There's nothing to be learned from that, other than a second-rate fan adaptation Starcraft with Tyranid looking zerg.
To me, it feels more like looking at Steamed Hams videos than looking at a real trailer.