This might not be a popular take, but I think Hannah is going about her business the correct way. It's pretty common to hear YouTubers moan about how they are suffering burnout etc, and I'm sure that being a one-man production team (while also having to directly interact with comments) can be pretty stressful. By employing these these people she's making her business more sustainable for the future. (and isn't using her child for content which so many people seem to do!)
I agree. I also think her attempts to turn her channel from a general "Youtuber/influencer/lifestyle" type of thing into an actual business- with a niche, the sex education, and employees- is pretty smart. It feels a bit weird because obviously nobody followed her originally because she's a sex educator, she just sort of turned herself into that after establishing herself as a Youtuber. But still, it seems like a much better strategy than just counting on your followers to care about your vlogs or general chatty videos forever. Becoming an actual educator (I do hope she continues her education, to give her content more substance) and running a business with employees actually opens a path for her to move into other jobs and careers beyond Youtube, should she ever want or need to.
And like you said, the Youtubers who do rely on sharing their life as the foundation for their careers end up almost having to post about parenthood and their children, if they have them, in order to keep audiences engaged. Which is very ethically icky. I am impressed by the way Hannah has managed to use her following in order to actually develop something more sustainable. That seems pretty rare among Youtubers.