This gets into what is the "blaspheme against the Holy Spirit?" I would say that it is dieing without asking for forgiveness of your sins. After you're dead, it's too late and therefore can't be forgiven. All sins can be forgiven, if we ask prior to death.
You and I may disagree slightly on this, and that's fine. I think we would both agree that God will be the final decider on that.
Sincerely
I agree with you to a point but out of an abundance of caution, I heed your always good advice and walk away.