>>37728584a lot of people watch these to see how they react to certain parts. if react content didn't generate engagement nobody would do it, personally I don't enjoy it and that's before considering the whole spiel about it being the cancer slowly killing content creation.
and the complaints similar to the one made by OP are done by people who aren't there for the gameplay itself since they want to check the good parts and the streamer needs to be following the story to react "properly" (whatever this means)
>>37728804gaming is in this weird midway where it can be something else because the experience is interactive, but for story focused games that's not why people drop by to watch.