Last attempt from me at least to cut through this nonsense and appeal to the adult in you, OP.
None of us know you or your H. The traits you have described in him and his behaviour towards you and your DCs, over the course of many threads, have led us to suggest that this relationship has long since run its course and that you and your DCs are better off living on your own. You have said yourself on other threads that you know the relationship is over.
When the Facebook issue raised its head and it put the spotlight on the flawed relationship so that others finally saw what was going on, you claimed that this was the last straw. You admitted that your H was abusive, but that as long as this was contained and he wasn't ridiculing you in public, you could put up with it.
Others on that thread expressed some astonishment that your embarrassment proved to be your watershed moment - and not your own welfare and that of your DCs, but others agreed that in the end, it didn't matter because at least you had got there.
This longer thread has attracted sage wisdom from several people who recognise NPD in your H. I can't offer you that perspective, only more generic advice about not needing proof of cheating to leave - and the effect of contempt in relationships.
The posters who have written about NPD have spent time patiently explaining the effects of that disorder, from the perspectives of child, sibling and partner. Some of their stories will have resurrected their own pain, but they write in good faith in the hope that their hard-won wisdom can help you.
Your passive-aggressive responses to those people is childish and rude, but it makes me wonder why you have become like that? Perhaps living with your H has induced that behaviour in you and it is your defence mechanism? If this is the way you behave towards people who try to help you, I have some concerns for your DCs, living with parents like this.
If you have really decided to leave your H and are not just saying this to get posters off your back, then step back for a moment and question your own behaviour too. Were you always like this, or have you become like it? Have you always seen life in fighting terms and not as a collaborative process of win-wins?
As an objective observer, I see you and your H locked in a fight about who can score the most points, a horrible war of attrition with the children in the middle of it. I cannot imagine that this is how you saw your life panning out, but I still wonder whether you understand that the main winners in this need to be your DCs and that regaining the adult in you is the greatest personal win you can achieve for yourself.