It is, but teenagers and the emotionally stunted fall into it so they can feel superior.
It's basically a diet conspiracy theory. It lets adherents think they're special and have figured something out that regular people didn't. That's a lot more comforting than realizing they're just regular people because they aren't mature enough to see obscurity as a good thing.
Yeah, it's a pretty deep pit of depression. I suspect most people who consider themselves blackpilled are clinically depressed. Not at all useful. But then again, neither is being judgmental of them.
These terms are usually used when talking about the dating scene and they originate from the movie Matrix where taking the blue pill means you'll stay blissfully ignorant where as red pill means seeing the harsh reality of the world. In dating contex this usually means the idea that women only want rich and high status men who are over 6 feet tall, muscular and have a huge dick and if you want a quality mate you need to achieve these things one way or another.
Black pill just takes this one step further. It's basically like going from determinism to fatalism meaning that since you didn't win the genetic lottery there's nothing you can do about it so just accept the fact that this is going to be your life untill you die.
I'd argue that isn't really 'pilled' at all, as I'd say 'pill' ideology requires some level of caring one way or the other, but I assume someone somewhere has assigned a color.
The common lingo originated from the movie The Matrix, where Neo was given the choice of taking the red pill and waking up in the real world, or taking the blue pill and staying in the fake fantasy that was his life.
4chan adopted the term and started calling themselves "redpilled," claiming that they were removed from the happy fantasy promoted in popular culture (wife, kids, decent job, etc.) and could see life for the harsh, cruel reality it truly was.
The mindset spread to Reddit where a community popped up (r/theRedPill), espousing sexual strategies for men in a society where they felt sex was highly unattainable for their gender. It turned into a very misogynistic subreddit, hating on women who "could get laid anytime" and didn't respect the plight of men who struggled for simple affection from the opposite gender.
Being "redpilled" took on a negative connotation, turning into a darker, conservative term to support men's struggles in life while at the same putting down women. Its original meaning has been corrupted into a warped idealism for men. One could argue it's promoting the opposite of its origin; fighting to create a fantasy world for men to flourish without effort instead of introducing them to the reality that their struggles are all self-inflicted and needed hard work, patience, and determination to overcome.
The term became well enough recognized that "_____-pilled" started introducing other concepts of being introduced to harsh truths in the world. In this case, blackpilled, meaning to give in to despair and depression in an uncaring, cruel world.
Because incels are the cause of their own suffering, circlejerking each other into the delusion that it must be their outsides that are the reason they cannot find a girl, instead of acknowledging that they're deeply fucked personalities and delusional views are the actual reasons why everyone hates them.
The view is anyone that can't get sex is worthless. It's a harsh truth that people don't like to admit.
People love to use the fact that people aren't get sex against them.
The whole treatment of incels seems hypocritical to me tbh. Like they make some good points. But society can't accept nuance, they can't accept that someone that don't like might be right about something's.