His definition of free will is quite limited. He only suggests that free will is limited to a "free" choice between options within one's power.

Conway said that there either is determinism or free will. If the future can be perfectly preordained (Gisin) due to infinite possibilities, then there is no free will. But if there are finite options, I think that there is "free will" for particles and people to choose between those options.

https://youtu.be/tmx2tpcdKZY?t=1074

https://en.wikipedia.org/wiki/Free_will_theorem