I'm talking about emotional and financial co-dependency, like people who can afford to live on their own, who don't choose to do so because they are unable to leave the nest because they don't know how to function without their parent taking care of them.
Normalizing dependency is not a good thing. There is a reason 'living in your parents basement' is an insult, and it's not because of the economics of it. It's because it shows a lack of ability to grow and mature and have a functional adult life. If you are still seeking parental approval and living off the bank of mom and dad you're not a functional dult.
Nobody cares if a 22 year old is living at home while they sort out their first job and pay down their loans. But if you're doing that at 35+ and you have no plans to move out for the rest of your life, that's entirely different.