Unless you kill them all at the same time. You can't commit three separate murders without premeditation. But you could kill three people in a rage if it was done at once. Like you push them off a cliff at the same time or within raid succession.
The time it takes to strangle someone to death and make sure their death necessarily means the second and third one had to be premeditated.
And you know I agree with you on what you're saying here. Especially about the the mix of Shanann and CW. Indeed she was imperfect, as are we all. But I think he had a very fragile ego. And while I don't think there's a shred of credible evidence that SW was abusive to that man, the way she talked to him or referred to him in a few public videos did seem snarky or slightly rude on a couple occasions.
And for a sensitive person or one with a fragile ego due to identity problems, that could indeed seem quite emasculating or hurtful. Or both. When coupled with the echoes of parents who raised a lityle narcissist and who hated his spouse and constantly communicated that they felt she was disrespectful, those feelings could fester in an unbalanced, emotionally unstable person with a fractured or incomplete identity.
Why do things like this happen seemingly out of the blue? Various reasons with a lot of apparent commonalities. A mismatched relationship could certainly be the trigger.
But as I've said repeatedly, these crimes are truly never about the behaviors of the victims but are always about the characters of the murderers. Because most people deal with things their spouses do that upset them or hurt them -sometimes public things -without violence. They talk to them and tell them not to do something. They get mad and argue. They separate or divorce.
It is only defective people who react to unpleasant or unappreciated behavior of those close to them, with such shocking, horrific violence.
The answer to why ALWAYS goes back to the perpetrator and his or her origins.
But I think some (definitely NOT you) cannot accept that and just must cast blame on the victim. No matter how subtly. Because if we can't blame the victim then we have to consider that this could happen to us, too.