Married, I don't believe that you are blaming Tina Nash, but, the thing is, DV is such an incredibly complex issue, that it really isn't as simple as warning someone away from a bad 'un.
This might illustrate what I mean...(I've name changed as I really don't want to be 'outed' in real life, for obvious reasons - sorry. But I think it's so important to try and understand this)
I escaped my DV perpetrator 10 years ago, after 12 years together. He was incredibly violent, and gave me some permanant injuries which still affect me today. I was extremely lucky. I had a group of friends who were amazing and supported me through the relationship, supported me leaving him, and helped me rebuild my life. My family helped me financially to get back on my feet and I am now married to a lovely DP who restored my faith.
Here's the kicker. Two years after I left him, one of the friends who supported me through my experiences with him, fell in love with him. They've been together a while now and they are recently engaged. She claims he is 'the one', he is a 'changed man' etc etc and they are planning on starting a family.
When she started dating him, every single person we knew, including her family, warned her against it, reminded her what he was capable of, and it made absolutely no difference.
She's never denied what he did to me, but she is 100% convinced that with her it will be different, that all of that is in his past, and that 'he won't do it to her'.
I find it heartbreaking, as well as a bit of a mindfuck tbh. The point I'm trying to make is that these men can be absolutely charming, charismatic, persuasive, credible and know exactly what to say to the right woman to get what they want. They are incredibly clever.
Besides which, if someone is blinded by love and determined that they can 'save/change' someone, nothing anyone says will make a difference.
The level of psychological savvy that these men possess and the manipulation and string pulling/gaslighting that these man are capable of is genuinely terrifying. That's why it's not a simple problem with a simple solution.