You can claim whatever you want but what is the relevance of such claims?
So what that someone has the illusion of free will? How does that prove anything relating to free will? There are people who have the illusion they are Napoleon, how in any way does such an illusion relate to the real thing?
See what I mean?
By the way:
Conway's theorem does not pertain to the existence of free will but to a consequence of free will.
The theorem could be paraphrased by: "experiments are not coincidences!"
In this regard, I agree with the notion that humans are not free (as in free will) to perform scientific experiments.