Hi, I've written thousands and thousands of words about mind control before and am now going to ramble here.
I think it's important to keep some amount of mental distinction between mind control as a plot element and mind control as a convenience.
In the case of the former, yeah, it probably should be disturbing the more you think about it. If a story/setting has mind control in it and takes itself in any way seriously, it very quickly approaches the zone of "the most fucked up things you could ever do to a person". Any setting/story that has mind control being possible in any repeatable form SHOULD have to contend with a whole lot of questions about how things haven't already descended into an authoritarian hellscape ruled by the most morally depraved and least respecting of personal autonomy (like real life) yet.
Interestingly this is actually something that I kinda respect in Harry Potter's worldbuilding (yes I have read other books this is just an easy example). The mind control spell is an unforgivable crime, and when it was at the peak of rampancy you had huge amounts of problems like not being able to trust anyone because they might be controlled by a bad guy or how people could avoid consequences for previous actions by asserting they were controlled and there was no way to prove it. Of course then you start thinking about it didn't actually come up that much over the actual course of the events in the story itself and other harry potter setting problems like how memory charms somehow AREN'T similarly unforgivable despite being longer lasting and even worse in some ways and blah blah blah anyway moving on from the mid as hell wizard book for children.
The point is that mind control when taken as a serious plot element should have a MASSIVE impact on any story that contains it, but it doesn't HAVE to if it's made within a context where everyone is willing to suspend disbelief on things. It should be a lot easier to do that when you're talking about the much more common type of mind control used in porn.
Rather than being a major plot element, mind control often ends up as a story telling convenience that is used to make a character act out of character without having to go through preliminary steps to make those actions actually make sense.
So like, hypnosis is a real thing, but it's very complicated. It's definitely never going to make someone instantly ahegao and suck their way through a forest of dicks. Doujin artists aren't going to care about that though, they're still going to have their faceless bald males pull up the shady hypnosis app on their phone within the first few pages so that they can get to the content people actually picked up the book to see and can save money on print costs. They're never going to have to fully justify the existence of that app or explain the wide scale implications of it existing, and nobody minds. It's just the nature of the media being presented. Everyone understands what's going on, and picking at it too much isn't going to make anyone happy, so why bother?
I'm not trying to say "oh it's just porn, just turn your brain off and enjoy", but more like "Is the mind control being presented in this story actually meant to be thought about?" If the answer is yes and it then makes you uncomfortable, that may very well be the point. On the other hand if the answer is no and it still makes you uncomfortable, are you sure you even want to be reading the story at all?
Basically, there's a whole gradient of the mixing of seriousness/sexiness of mind control in fiction. Not all of it is sexy, but not all of it is meant to be fucked up either. Everyone should have their own comfort level, but having a level of "no mind control at all" seems unnecessarily squeamish to me.
I am a little biased though.
