>>313029
Nah, that's a classical holdover from the early days of literature, when fiction itself was condemned as an indulgent excess, such that early fiction writers felt compelled by guilt to wrap their stories in some pretext such as being a hypothetical scenario or dream, frame stories describing it as a lost text related by the protagonist to the author, or the literal reader being connected by the book to perception of a true alternate world. This, of course, followed other relaxations of conventions by writers, such as the long held stigma against prose as inferior to poetic verse, or against written language itself.
This attitude persisted longest in genre fiction, especially speculative genres such as fantasy, AH, horror, and SF.
Partly for that reason, such contrivances appeared in many early computer games, especially adventure and roleplaying, such as Ultima, Omega, and Myst, in its most extreme form: There is no protagonist character to act as an audience surrogate, nor that you are intended to self-insert as, you are literally isekai'd into the world of the game. There is an even further step, more computer game specific, taken by some such as Uplink or arguably C&C, where the game itself is implied to be not a simulation, but mere network terminal software, and you IRL are remote controlling actual events on your humble PC.
Such pretensions have been thoroughly outgrown by audiences and writers, existing now only as occasional gimmicks.
So yeah, fretting over the fidelity or chastity of hentai characters is super duper mega ultra gay.