@DaasYochid,
“I know. I’m sure it’s not universally accepted; it’s certainly not my (Litvish yeshiva) mesorah.
But even if you accept the concept, can’t you see how dangerously it’s being applied?”
Maybe it’s not universal. I don’t know. But Tanya is pretty accepted, so you shouldn’t have a problem with us believing that. I don’t think she’s applying that incorrectly. She didn’t base the partner stuff on that.