Hunter gathers is not something sustainable for a large scale complex society. It is not a position we would favor at all and I'm struggling to see why an AI would try to make us value that set up or how you think a society with technology strong enough to make strong AI would be able to be convinced to it.
Views of killing animals is more flexible as the reason humans object to it seems to come from a level of innate compassion for life itself. So I could see that value being more manipulatable as a result. I don't see what that has to do with a doomsday set of values though.
1950s gener roles were abandoned because (1) women didn't like it (in which case maximizing people's well being would suggest not having such gender roles) and (2) it was less productive for society in that suppressing women limits the set of contributions to society.
I don't think you've presented here a set of doomsday values to which humans could be manipulated to holding by persuasion alone or demonstrated why they would be a set of values the AI would prefer humans to have for maximization.
I put "trivial" in quotes because there are obviously some exceptionally large technical achievements that would still need to occur to get here, but suppose we had an AI with a utilitarian utility function of maximizing subjective human well-being (meaning, well-being is not something as simple as physical sensation of "pleasure" and depends on the mental facts of each person) and let us also assume the AI can model this "well" (lets say at least as well as the best of us can deduce the values of another person for their well-being). Finally, we will also assume that the AI does not possess the ability to manually rewire the human brain to change what a human values. In other words, the ability for the AI to manipulate another person's values is limited by what we as humans are capable of today. Given all this, is there any concern we should have about making this AI; would it succeed in being a friendly AI?
One argument I can imagine for why this fails friendly AI is the AI would wire people up to virtual reality machines. However, I don't think that works very well, because a person (except Cypher from the Matrix) wouldn't appreciate being wired into a virtual reality machine and having their autonomy forcefully removed. This means the action does not succeed in maximizing their well-being.
But I am curious to hear what arguments exist for why such an AI might still fail as a friendly AI.