There are people who don’t like fantasy; but what they really don’t like is bad fantasy, and there’s always more than enough of that to go around.
A lot of the problem is simple to see: the writers just haven’t made their fictional characters seem real.
There’s really no point in writing unoriginal fantasy featuring cardboard characters who talk and think and act like everybody else’s cardboard characters.
If you’re doing that, you haven’t created a fantasy.
You’ve created a college campus.