A theory that says that unicorns exist but only go places where no one will discover them (even though they aren’t invisible), is dumb.
A scientific theory should be compatible with experimentation.
It doesn't require a contrivance or a conspiracy. It simply requires determinism, which before QM, is something that was assumed to be true.
If superdeterminism is true, we'll have difficulty demonstrating that scientifically. Searching under a streetlight for the truth, because that's the only place you can see, isn't going to save you from that.