With reference to the part of your quote that I italised, does that concur that, my hypothesis is possible and could happen?
I am convinced that people who know how to influence the human psyche, and this is exactly what I had in mind, can control a person and make him do this or that action. But I will make an amendment: there are people who do not succumb to this. Here, I agree with FatFork: it all depends on the person's propensity for the suggestion.
Methods such as Erickson's hypnosis are a set of several tools for gaining trust from a person, having a confidential conversation, and, as a result, gaining their submission, provided that, in their subconscious, the person has already accepted what was discussed for himself. The person will perform actions automatically, as he will be in a state of trance. An example of such a trance is when we experience regularly thinking about something while being distracted from everything that is happening, and then "waking up" and returning to reality.
There are people who get such a suggestion without any education. If you are familiar with gypsy hypnosis, then these people have strange abilities. Therefore, when observing the behavior of strangers diligently trying to become "useful" to you, you should always be on the alert and understand that you can be manipulated.