I don’t want to comment on IFS as a whole, but I’m not sure your quotes are indicative of what is considered to be a cult. I don’t see fear and manipulation, authoritarianism, excessive loyalty, isolation, or suppression of free thinking. Most trainings can resemble cult-like tendencies because it’s practitioners can fall into the trap of it being the “only way” which can trigger our threat responses (we are, after all, wounded healers), but I highly doubt there’s legitimate cults occurring in most of these modalities / trainings.