>>20454720They need something in their otherwise empty life. With no friends, gf or a healthy relationship with family their social skills are almost completely nonexistent. With them not having jobs they have lots of free time but instead of using it to better themselves they start fabricating a life more in line with what they want for themselves. There's a hefty amount of control issues too. Their lives are wildly out of control yet empty so lying fills it for them and makes them feel like at least something is within their control.
The end goal of most here is to fabricate a convincing enough lie about someone else here that others will believe so they can all group up against that other person. To keep it short they're lying to hopefully make connections with people who are just as awful as they are. They'll decry things like discord but then hop into a group call to talk trash on bant posters.
It's all miserable people who want to have somewhere they belong with communal hatred. If the cost of gaining that is showing yourself to be a liar so be it.
It's a very sad way to live your life where you have to make up things about other people just to get some kind of attention.