> Determinism in this discussion means that a given person will 'behave in an expected manner'.

Oh I see. That is not what determinism means. Determinism means their actions are predestined, "determined" by the initial conditions. Computer programs - including AI - are deterministic, barring cosmic ray flips. The same inputs running in the same environment produces the same output.

Humans are or are not, depending on whether free will exists.

Either way, it's hard to draw the boundary around determinism such that it includes humans but excludes AI.