Is the subtext here "don't have children if you can't do the job"?
If it is, then it's valid to discuss the difficulty of predicting what exactly the job of parent involves when it can drastically change due to technology and social norms over the interval of 5-10-15 years between making the decision and executing the role.
This isn't a blanket statement to abdicate responsibility, nor a blank check for unlimited responsibility, but certain unanticipated challenges are expected and some grace must be given in light of a dynamic environment.
Responsibility is an abstract concept that we operationalize in order to make judgements and decisions. Like any operationalization problem, how can you be transparent around its construction?