This concept is definitely quite relevant to me. My current project, Urban Wolf, had some... interesting character interpretations given by review swaps on a different platform(I had a lot more posted on that platform than my current Tapas release, but most of my points will be relevant to my Tapas release). Including, but not limited to...
Calling my main character a shallow psychopath. Multiple times.
Calling a supporting character a psychopath (oh, AND the main character on top of that) for torturing a dude who had gotten people hooked on supernatural drugs against their will and proceeded to blackmail them with an antidote.
Related to that torture point, there were buffoons that wouldn't shut up about how "she could've said no" to participating in the torture scene when she is in what amounts to be an organized crime outfit that is housing her.
Statements that my main character briefly having a moral crisis at certain points made them look worse/more like a psychopath than not having one at all, because she "got over it too quickly", characterization of being emotionally reserved be damned.
Last but not least, though there are several more grievances that I won't list here: There was a scene where the main character is in what amounts to be a dream sequence. I dropped MASSIVE, non-specific hints of the main character's backstory (something which I had been extremely careful not to give away many specifics to) during that chapter, including a little bit about a side character that's basically never physically in that particular story, but the big part that my most ardent "critics"(and I say that knowing it is an insult to the term critic) took away was "Yay, magical power-up!" Like, WHAT!?
I think there was a Poe quote that describes how I felt about the whole situation on that platform(I'm abridging it for comedy, though):
The thousand injuries of RoyalRoad I had borne as I best could, but when the foolish critics ventured upon insult, I vowed upon not bothering to review swap again.
I have remained cynical of review swaps ever since, and I don't bother to update Urban Wolf on that website anymore(Though my rating average was 3.96, I considered the misunderstanding to be enough that I don't want feedback from that website's demographic so much. Call me a perfectionist if you like.).
The short of it is, if you don't spoon-feed your readers information and instead venture upon more subtly hinting at their emotions with physical feedback, strategic said bookism, and isolated strings of thought, there's going to be at least a few of them that fall off the bus because your cleverness and subtlety is too graceful for them. Unfortunately, attempting to serve the lowest common denominator is only a good idea in children's books and YA novels, so you're never going to get a perfect overall score from every reader across the internet. There's actually a quote from one of my writer friends that I remember and cherish, even if I don't completely agree with it:
Readers are stupid, and I mean really stupid.
The flip side to this is that if readers are able to back assertions about your characters that you don't support with actions or thoughts that genuinely contradict what you want the character to be, you might just be the one in the wrong yourself. Remember not to get arrogant about it, but don't place yourself at the critics' behest. It never ends well.
My story, if anyone wants to compare notes: