I protect my SO, with whom I cohabitate, by sharing my knowledge and experience with. By leading.
If my SO starts exhibiting behaviour indicative of new psychological / physical pathology, we deal with it, together.
We, I, don't do nothing. That's what's commonly referred to as enabling.
I had a partner who smoked and continually encouraged them to quit. It took years. Pathological behaviors are hard to break.
As is the generally accepted method of writing comments around here.
Absence of further explanation is invitation of discuss. So here we are.
That's absolute nonsense. There's no reason for OP to disclose that information in relation to the post they made. They were just posting a personal experience, not looking for anyone's advice.
That doesn't sound like an argument anyone would intentionally make.