This isn't to say that those conditions aren't precisely defined or that they aren't real, but they might be at least partially a product of our society.
Your skepticism about whether an issue "can be directly attributed to a singular condition" is just good medicine. As conditions are studied more, often it's discovered that it's actually a few different conditions that share some symptoms. Maybe all of these sometimes wishy-washy "we didn't have this when I was a kid" conditions are just medicine learning more about the mind.