This is such an interesting article to me because you're right: Whiterose's role as a major villain at the head of a conspiracy is problematic, especially considering the implications of her sexual relationships with her assistants. But on the other hand, she's such a "cool" villain in so many ways that it's hard to complain. I remember hanging out in the message boards during the final two seasons, and even as Whiterose killed Angela and inflicted all this horrible pain on the main cast, i got the impression that nobody ever "hated" her. She inspired fear and awe, rather than anger or disgust. On a meta level, it was actually kind of fun seeing her gain power throughout the first three and a half seasons.
Regarding her role in a vast global conspiracy: I think the show did itself a disservice by making it seem like she was solely responsible for most of the world's ills. Like, they let a lot of powerful people off the hook when they did that, and they made the universe within the show seem smaller than it used to. That's one of my main critiques of the final season: the first three seasons gave off the impression that there was a much larger, complex world going on offscreen, that beyond Whiterose and Price there were hundreds of other powerful people with their own agendas. And then in the final season it's like the show said, "nope, it's only Whiterose and Price that are important. All the other elites might as well not exist, it wouldn't make a difference." The universe the show set up in the first three seasons now felt a lot smaller.