In our relationship, which is female led, femdom, etc. the whole point is that the focus is always on my wife. If she's with someone more dominant and her focus becomes pleasing him while they are playing, that's fine, but never am I ever more focused on another man's wishes than I am on my wife's safety, enjoyment and satisfaction. If I'm included in their play sessions, and they decide to stay in the bdsm mindset, there can certainly be a hierarchy with another man at the top and me at the bottom, but I submit to others at her demand only.
While my wife is dominant with me when it's just the two of us, she isn't trying to replace me, make me a worthless sexual partner, less of a man, etc. She does keep me in chastity and incorporates denial and humiliation into our dynamic, but she does it to increase sexual tension, not to nullify me. She even enjoys making love to her husband once in a while (can you imagine?!). She has to live with me as her life partner and the ******* of our children, and she loves me as the man she married. Why would she want to "transform" me to be useless and unattractive to her? Personally, if I'm undergoing transformation and she's part of the inspiration for it, it's to get in better shape for her, work out more, eat healthier, etc., because making and keeping her happy is my priority.
My wife is very attracted to black men, and she does enjoy being with men who are more alpha and/or dominant than I am, and she knows she has my full support in her decision to fuck whomever she wants. She has no trouble keeping me in my place and I help facilitate whatever she wants to the best of my ability. She cuckolds me to whatever degree keeps her enthusiastic about it, and this works very well for us.
To put it as simply as possible, our relationship is the most important thing. Extramarital fun will always be secondary to being a strong, stable, secure and happy couple. I try not to judge others, and whatever works for reach person and couple out there is their own business, but I generally feel like the vast majority of people pushing for a different reality, in which the husband is intentionally useless 100% of the time, do not know what it means to be in a sustainable and happy partnership.
I've known many hotwife couples who don't call their husbands cuckolds at all, and many who do cuckold their hubbies but have tons of sex between just the two of them between sessions. I've met several couples who have dealt with ED, partial paralysis, and other medical conditions by adopting a cuckold lifestyle. I've met a few women who are turned on watching m2m sex and others who like pegging or pushing "******-bi” boundaries as part of a D/s situation. I've met a small handful of women that actually find being with a secret cross-dresser exciting, and a couple of others who feminize their husbands once in a while to let him live out a fantasy. I've met a female/m2f trans couple that's not into cuckolding but likes IR sex, and know of another f/m2f couple on this site that have more of a cuck/bdsm dynamic. None of these people are doing it wrong in my opinion. Cuckolding means different things to everyone, and I find it fascinating to listen to podcasts and read blogs about real people and their vastly different stories.
But what I have NOT seen so far in 40+ years on the planet and 20+ years in the lifestyle is a woman who's actively looking for a sexually useless husband and life partner, who's expected to be asexual. There are probably exceptions out there somewhere, but I've never met a woman who is sexually attracted to strong, straight, dominant or alpha men but is looking for a cis man who doesn't fit that description, so she can make him wear dresses and give up on ever having sex again. It's my opinion that for a cuckold relationship or any other kind of non-monogamous relationship to work, it has to be a solid relationship on its own first. I think saying things like, "all white boys should accept this natural order and seek out these relationships" ignores that fact, and is likely to result in a whole lot of sad, lonely white men who never get to experience a healthy marriage, despite all their extremely vocal hypotheses of what a cuckold marriage "should" or "must" look like.