Quantum entanglement requires seemingly instantaneous action at a distance, but it could also just be very very very fast, like 100 times faster than light, mechanical interactions.
The only question in physics that matters is this.
What is the medium by which both electromagnetic and gravitational waves propagate? To describe this medium perfectly is to solve physics, too bad we have imaginary fields and extra dimensions to worry about or it might even be a simple question of classical mechanics.
Quantum entanglement isn't a hoax, but it's also not the phenomenon you have been led to believe.