Note that they still get to resist if they’re strong enough.
I should have been able to float free of my horcruxes and possess any victim that consented to me, or that was too weak to refuse me.
(Emphasis mine.) There’s no suggestion that introducing the Resurrection Stone does away with victims’ ability to resist. It just means that Voldemort’s spirit can “fly where it pleases” rather than having to stay attached to the horcruxes, as he always planned for Horcrux 2.0.
Note that they still get to resist if they’re strong enough.
(Emphasis mine.) There’s no suggestion that introducing the Resurrection Stone does away with victims’ ability to resist. It just means that Voldemort’s spirit can “fly where it pleases” rather than having to stay attached to the horcruxes, as he always planned for Horcrux 2.0.