Not at all. The fact that it's hard to change yourself is itself part of the resistance against manipulation. It's a second layer of defense. Even if someone is able to manipulate your explicit beliefs, they still aren't able to manipulate your behaviour.
That's an unfalsifiable assertion/tautology that is basically a "not even wrong" statement.
That is, you're basically asserting "If you try to change your behavior, but can't, it's because your explicit beliefs have been manipulated into thinking something that your body won't go along with." Well, how do you know? Seems like you're saying "Because your body would go along with it if your brain wasn't being manipulated."
Just look at the millions of people who have tried for decades to lose weight. You can call it "manipulation" or whatever, but I think a poor quality of life, shortened life span, etc. are plenty real, valid, "non-manipulative" reasons on their own for obese people to want to lose weight even if you ignore the societal implications. And does taking semaglutide somehow magically make it not "manipulation" anymore by your definition?
I'm not sure about semaglutide, but drugs in general are a good example of my point, because people use them to change/manipulate others and themselves. For example LSD has been used by cults, by the CIA, etc..
