Yes of course, it's the best theory we currently have. Also Newton's gravitational theory was the best explanation until someone came with a paradigm shift that explained the observations better. And we seem to be quite stuck with the current theories, so I suspect we might need another paradigm shift.
Newton's gravitation is still pretty relevant today. Only in special circumstances is relativity necessary. I wonder if Dark Matter and Dark Energy will be just as relevant in the future?
I'm not sure the SR is really that large of a paradigm shift.
All Einstein did, I know that conceptually this was a large leap and just saying "all he did" is doing him a severe disservice for his contributions, is note that the mass of an object is dependent upon the speed of the object. Such that for velocities that are not an appreciable fraction of c we can use Newton's laws of gravitation perfectly well.
TLDR; Einstein did not replace Newton, he tweaked him.
