Could you substantiate your claim that the term no contact was created specifically for adult children who estranged their parent(s) to protect themselves VioletSky?
I really think that as you constantly say that this is the case, you should provide evidence to support this.
I don't understand why you feel you are constantly being questioned about your reasons for estrangement. I haven't seen that in this discussion and if it has happened elsewhere, I don't think it is helpful to keep referring to it here.
Of course your life experiences are valid, as are the life experiences of others that differ to your own. I do not see any invalidation of yours, but I have seen from others, the invalidation of estranged parents experiences in this discussion.
To tell an estranged parent who experiences their child's estrangement of them or no contact, that it is not abuse is just someone's opinion and for me, an insensitive one.
The refusal to have any contact can be and is experienced by some as abuse. If that is their experience, no one has the right to say they are wrong and maybe those who think it is, would see things differently if they were the ones who had been estranged or were living with no contact.
That said, trying to tell others what language is or is not acceptable is an invalidation to those who use a particular term differently.