As a student in the new generation of UX designers i've been more sensible to these matters but i do see signs of alternative behaviors emerging (the right to repair, for example) which could benefit hugely from our discipline methods and learnings.

So determinism makes the designer responsible/hold accountable assuming they "determine" what users "should" do,

while non-determinism absolves the designer leaving the burden of responsibility of the consequence of interactions, on the user. So non determinism assums that the embedded characteristics don't work on the user, or that he is able to resist their encouragement or discouragement. That he can shape the aspects of those certain characteristics than the other way around, thereby ultimately defining what to do with the technology.

Point on reward & punishment feedback is a really good point, darkpatterns comes to mind.

If IxD does not provide choices for action, there is no room for ethics: People act based on conditions, not on considerations of what should be done

This reactive behaviour is what UX practioners of gamification feel proud to do. It's disgusting to see them feel proud doing it, how come they feel no remorse doing it?. I too will have to do it in the near future, but I won't fucking have a glitter in my eye and a wide smile across my face doing it.