It's not an hyperbolic strawman, it's an example that highlights how certain situations could feature a woman technically having power over men and still be completely unsexual or have nothing to do with the theme of female domination. To me, it is as foreign to the theme of femdom as women forcing men to be furniture, women pissing/shitting on men, women making men sleep naked in a dog cage or women making men eat dog food. To me, femdom isn't just about women committing random warcrimes on men, just like "maledom" wouldn't be about men committing random warcrimes on women. If that is how you define femdom/maledom, that's fine, but I don't agree with it.
If you could replace those women with men or those men with women, and it changes nothing about the narrative, then I would also consider this a narrative failure. Humiliation, bondage and torture are central to the theme but in the games being discussed here, as I explained, it is often done in a way that just misses the mark. I believe it should be gendered and sexual/erogenous in nature, and therefore have a greater focus on genitals and respective gender differences. To me, the theme of femdom should present femininity as powerful and masculinity as a weakness. I think femdom in games like NiF, which isn't even a "femdom game", does a much better job with this than either vicious circle or moving down.
Women wearing strap-ons and futas aren't really femdom to me, because it is effectively women being dominant against men by trying to be men or, in the case of futas, by quite literally being men. Women penetrating men is also often used as a way to "feminize" men, which presents this idea that femininity or penetration is inherently submissive/weak, therefore(imo) completely against the idea of women being dominant(this is also why I prefer de-masculinization over feminization). The theme of women using power to dehumanize or objectify men in an asexual way is not something I consider erotic in nature, and therefore(imo) serving the theme of femdom as poorly as my airport example.
If you don't understand my argument about how these themes don't really fit my definition of femdom, that's fine, but you are still completely wrong about this narrative that it's just "I don't like it, so it's not femdom". The reality is that I don't like these things because I don't consider them to be femdom. I consider them to be more like "femdom-adjacent".