At some point in time the child needs to move on and find a way to deal with the circumstances they find themselves in.
However,our reality today is directly related to how we were raised by our parents. For better or worse we are a product of their beliefs, insecurities, strengths, weaknesses and examples.
Using education again as an example, if my parents encouraged me to pursue an interest I loved, gave me financial and moral support and helped guide me - if at that point I fail and blame them, then that's on me.
If my parents made it clear that they were unsupportive of any higher education, and actively discouraged me from pursuing it and I end up working in menial jobs my whole working career, then I am sorry, but that is on them for failing to do their job as a loving parent.
I understand that we can all make changes in our lives but we are severely disadvantaged the later in life this occurs.