His theories predict countless things accurately but his key theory of general relativity doesn’t mesh with quantum mechanics:
The most important reason physicists think that general relativity must be wrong is that it doesn’t work together with quantum mechanics. General relativity is not a quantum theory, it’s instead a “classical” theory as physicists say. It doesn’t know anything about the Heisenberg uncertainty principle or about particles that can be in two places at the same time and that kind of thing. And this means we simply don’t have a theory of gravity for quantum particles. Even though all matter is made of quantum particles.
Let that sink in for a moment. We don’t know how matter manages to gravitate even though the fact that matter *does gravitate is the most basic observation about physics that we make in our daily life.
This is why most physicists currently believe that general relativity has a quantum version, often called “quantum gravity”, just that no one has yet managed to write down the equations for it. Another reason that physicists think Einstein’s theory can’t be entirely correct is that it predicts the existence of singularities, inside black holes and at the big bang. At those singularities, the theory breaks down, so general relativity basically predicts its own demise.Sabine Hossenfelder, “These Experiments Could Prove Einstein Wrong” at BackRe(Action) (March 26, 2022)
Significantly, no experiment could prove Darwin wrong. But that’s not because he’s right; it’s because Darwinism has become a cultural way of seeing the world and, as such, isn’t usually testable.