Yes and yes, I know NOTs also addresses this.
If you consider that, upon embarking on OTVIII, the person really believes and has attested to "no more PT (present time) BTs" then what is being addressed on OTVIII is the person's
own misconceptions as to who he/she is. These are identities the person has encountered in auditing or life which he thinks of as himself. In life, for example, some people may read a book or see a movie and think to themselves, "That's me!" They can really believe and begin living out these misconceptions about self. Currently we see a perfect example of this in LRH V2.0.
An identification repeatedly encountered in auditing seems to stick even more thoroughly and becomes a sort of self-created "truth".
The saddest complaints about OTVIII that I've seen stem from people unwilling to let go of the misconception of some precious past identity. I understand that it can be disappointing for someone to discover that he/she is not really some stellar identity reborn or that "my reincarnated husband from 20,000 years ago" is not who she thought he was etc.
If there's a truth revealed on OTVIII it's Neti Neti.
en.wikipedia.org
"Through this gradual process [neti neti] he negates the mind and transcends all worldly experiences that are negated till nothing remains but the Self. He attains union with the Absolute by denying the body, name, form, intellect, senses and all limiting adjuncts and discovers what remains, the true "I" alone."