Yeah, that’s the right channel if you found it freaky.
Basically, Curedolly teaches grammar by explaining things from the same perspective that Japanese people learn about grammar in school as natives, as opposed to the typical framing used to teach people who are learners of the language.
Personally, beyond just the creepiness, I don’t love how she frames this as something being “hidden” from learners, and she’s revealing “the truth.”
When someone creates learning materials, they do so with the goals of the target audience in mind, and, generally speaking, learners of Japanese do not need the level of detail or viewpoints that natives receive in lessons.
You can find loads of videos on youtube that talk about the same stuff she talks about, but they’re in Japanese, made as supplemental resources for Japanese middle schoolers who have to study grammar. They aren’t learning how to use Japanese, they’re just learning how to analyze it.
That’s why there’s a usually a discrepancy in how things are framed. Not because the way they explain things to natives is “the truth,” but because the purpose of the resources for natives is not for teaching them how to use the language in the first place.
At the end of the day, sure, it’s all interesting information, I just don’t find the presentation or her attitude about it appealing.
If I want resources for natives, I watch the above-mentioned videos made for natives.