Well... expectations shift between a movie ticket and a bucket of popcorn for 10€ or the same for 30€.
Cinema has gone really damn expensive, and loaded with ads to boot - but movie critics don't get that crap experience, they get exclusive previews. It's literally a different world.
My GF adds other points: while the audience as a general loves "typical plot" movies, critics who have to see 20 movies based on the same formula a year will be sick of it.
Imagine applying that metric to any other job.
"Fuck, this is the 20th React component I've had to build...I'll just do it shitty instead."
Clearly though their is more to a movie or book than just the plot.