To begin, Google the definition of "ambient." You will find that it means "all around you" or "related to your immediate surroundings." Think of it as the air you breathe and then you'll see that it's not a category of abuse like "physical", "mental," or "emotional." Ambient abuse is the general atmosphere of your environment, the stuff that happens all the time, so often and so subtly that you don't even notice it, just like you don't notice the air that you breathe.
Now go back to your first post, yes, the one you yourself wrote, and read it with the above information in mind. Your first paragraphs describe "ambient abuse." There's more to it, of course; this is simply a starting point for your comprehension.
When you live daily with people saying or thinking negative things about you, when people routinely undermine you or attribute thoughts and actions to you that you never even contemplated, when information (real or imagined) is shared about you and it affects your relationships, you are living in an environment of ambient abuse. When people make excuses or give alternative explanations instead of clarifying or speaking with accuracy, that's ambient abuse. The bottom line is that any time anyone tries to control or manipulate you or the circumstances of anything involving you, it's ambient abuse. It should not be done. You have the natural right to accurate information. You have the natural right to act on that information as you see fit even if your decisions or actions are not the ones others would choose for you.
Does this help?
AB