We're not talking about "for fun" or "style" as much as content. Does the content get better? Does the film improve as it progresses? If the review is only base

We're not talking about "for fun" or "style" as much as content. Does the content get better? Does the film improve as it progresses? If the review is only based on style, then I guess, sure. But as far as content, well how would one know unless they read the rest of it? There are plenty of novels that change quite significantly in character partway through. There are plenty of films with a weird first act before you get into it. If a book is popular and has thousands of people reviewing it, why not let the people with enough context (i.e. those who actually read all of it or at least the majority of it) review it? Is one so smart that their review based on only partial information is necessary and needs to add to the chorus of all of the other reviews? Would you trust the review of a professional movie critic if they said well they didn't like the first 15 minutes so they just quit. Well today because we all have a megaphone through review sites, we are all on the level of professional critics to more of an extent than anyone would be in 1990 so we all have some responsibility to write informed reviews.