He was also wrong about quantum physics.
Nobody’s perfect.
Jury is still out on quantum physics.
Quantum physics is indisputably useful.
However it still might be a statistical shadow of physics that we cannot observe. You can’t prove a negative.
That is still to be seen. No experiment to this day, bragging by various experimenters notwithstanding, has violated Einstein's locality, thus Einstein was right on QM so far.
Since the serious experimental attempts to violate Bell's inequalities have been going on since 1960s, that pursuit is increasingly starting to look like the one for perpetuum mobile before the laws of thermodynamics were discovered.
No less for the expansion of the universe.