It is a much better approach than negativity - but it takes any pressure/expectations off you, and puts all of it on the WAS, which is where it should be.
This is how I was finally able to let H go. I keep saying it, but I think until you get there, you don't understand it. I love H, even as awful as he's been (because I know a different version.) I'm letting him go because I love him. Whatever is going on with him is stronger than his desire to stay with me.
Until he can return to me, wanting to be here, I'm better off without him. I don't need or want a reluctant partner. I am willing to be alone, rather than have that.
It's up to him. I'm done, with love. I think you finally get it now.