PF is calling the shots, but Mom’s voice is subtly directing him. She didn’t mean to create the controlling, vindictive man he became ... but inadvertently she did by the way she treated him IMO. Strong ‘single’ or ‘divorced’ women sometimes “unintentionally” treat sons as if they aren’t as smart. The mother is simply “babying” the son, “loving” him, in her opinion, but the son thinks Mom does it because he’s not smart enough to do things on his own or as smart as female sibling - which leads to desire to control women by mental and/or physical abuse.
All speculation based on personal observances. MOO.
I don't think there is any evidence in psychology to support that. Yes, some strong, loving women can "baby' their sons but that is not what creates the desire to control women by mental or physical abuse. That usually creates loving sons, with possibly other issues ie can't cook for themselves, or do laundry, reliance issues etc.
That would take pathology - mean controlling, oppressive, temper, outbursts from the mother. It can also arise from many other environmental issues, the mother isn't necessarily the cause of his problems.
My own opinion is that intrinsically something is just wrong with someone who can plan to murder someone else. Is is gene gone bad? an area of the brain that didn't develop properly? add to that environmental factors and you create the monster..