@darthmongoose kinda hit it on the head: long as it's relatable to some degree, people will be drawn to that unhinged appeal.
But more importantly -- the best unhinged stuff I've read always had faith that I understood what went down and the weight of it. AKA -- don't assume your readers (and potential readers) are stupid and won't get the message.
I do cosmic horror romance -- I let loose every update: and yet it's still relatable. People like the weight of Brenda & "Christina"'s relationship, and there is still that message of "loving someone with their differences". They've found love despite the horror and dangers, and the unhinged scenes, combined with the love, makes it work.
Unhinged without substance and context is non-sequitur. Unhinged with meaning pulls people in.