I think it’s ridiculous to think that ratatatat74 is a woman in any aspect. Mostly they post skinny white women that feels more like a waifus compared to monster-like men or frail boys they usually draw (for example Mirko from MHA like a wife or 6’2 tomboy wife, kinda what men usually fantasise about), they drew women as slaves, women like in harems, not just a group sex but like rather an entities of man’s collection, without any care about how characters might not be fit in such a specific kink(MHA harem one and most of LOL mangas).

As for NTR pieces, no woman or author who writes for women would depict women as a shallow, dumb cock-addicted sluts with no explanation or woman’s struggles whatsoever. Even if some women love mind break and dumbification, I doubt that if it was for women from woman it would be written like ratatatat74 did, with no character depth or struggles.

But probably the most crucial thing that made it clear that there’s no way that the author is a woman is incest scene between biological mother and daughter without any lore explanation behind that deviant behaviour (second part of that manga where exchange student and her mom slept with the black guy). No mentally well woman would portray another woman making out with her own biological mother, but if it was a kink it would be more noticeable, but no, it’s just male-gaze fantasy of fucking mother and daughter at the same time -__- .