The bulk update request #16490 has been rejected.
Hypnosis describes a process, while mind control describes a state. The former shouldn't automatically imply the later; for example, the process may fail. In addition, with the character Satsuki (Blue Archive), a popular picture format inolves her hypnotizing the viewer such as in post #6246402. Tagging these mind_control is inaccurate, as they usually don't depict mind control happening or anyone under mind control. (The linked post is a slight outlier, in that the background of concentric circles and radial blur effect suggests the hypnosis is having effect.)
Hypnosis also has paraphernalia and cliches that are specific to it and not to mind control in general, the most recognizable being the coin on string and the hypno phone app. Hypnosis shouldn't be treated as synonymous with mind control, and should only be tagged when those elements are present.