As I keep suggesting, Mary Harrington's points relate more to the impact of early years instutionalised care than to maternal deprivation, as such. And that is certainly what I find interesting.
There are many possibles angles to explore as to why we now have a generation of young people increasingly looking for the state, or for society, to protect them from unwanted thoughts, or from perceived threats to their safety. Trigger warnings; safe spaces, and so on.
There are clear analogies to be made with the nature of instutionalised, highly regulated care with its form filling, health and safety measures ( which often result in a totally risk averse approach to any play activity or situation) and the bureaucratic recording of any harms, no matter how slight.
Obviously there are other factors which may contribute to the sort of climate we are now witnessing on university campuses, in particular. The nature of social media and echo chambers, for one - and which is discussed in 'The Coddling of the American Mind'. The authors tend to pin point, not only the increasingly risk averse helicopter parenting styles, but also the advent of the iPhone, for one. The first generation brought up with access to the Iphone is now coming of age.
I think the best thing to do is to read Mary Harrington's book; what we've been doing here is focsing on just one very small element of the issues she discusses. You don't have to agree with everything she says, but undertsanding the arguments woud help in developing a more informed rebuttal or alternative perspective.