Why would a physicist embrace superdeterminism? Present science holds the falsifiability of a theory as a necessity for its utility. Under the light of SD every experimental result may be impossible to interpret as supportive of a theory.
Free will seems to be the most difficult philosophical question. Accepting SD invalidates the scientific method's approach to learning about the world.
You may be interested in other non-local hidden variable theories as a way to sidestep Bell's Theorem & the Copenhagen interpretation.
There is an analog of free will that works even in a cellular automaton. For that you need two things:
1. the part of cellular automata describing a thinking entity can be separated from the rest of the world: that is changing states of cells anywhere outside of it doesn't change the state of the entity itself.
2. it is not possible to replace the computation describing this entity with anything simpler.
2 means that any method of predicting what this thinking entity choses is completely equivalent to that entity living and making the choice it wants by itself. And 1 means that the part of network is indeed a separate entity.
With superdeterminism 1 can not be true, and a spin change of a single particle far away triggers very complex change in behavior of all thinking entities that were close to that particle in the past.
Free will seems to be the most difficult philosophical question. Accepting SD invalidates the scientific method's approach to learning about the world.
You may be interested in other non-local hidden variable theories as a way to sidestep Bell's Theorem & the Copenhagen interpretation.