Yes, in both cases, being Treated or non-Treated, as long as the character is a bimbo (has the "Ditz Speech" perk), then the option will be available. It doesn't seem like a bug, specifically, but it does look like an overlooked detail. The reasoning behind this may be because that there were supposed to be two kinds of checks for Treated characters: physical and mental, with variants for being male or female. Because there isn't a way to tell if a character has been Treated and is mentally a female, the checks for any bimbo perks were added with the generic Treated check. New Texas seems to be the only place that does this kind of check, whereas everywhere else the physical check is used for the Treated mental blurbs.
While the "physically" Treated function for females (isTreatedFemale()) is supposed to be used in cases where the treatment has changed the character to a female form, I've seen it being used in a few blurbs for the mentally Treated female (like the character being giggly or wanting to fuck all the time). This may also be an incorrect/overlooked detail and the same can be said for the physical male Treated function (isTreatedMale()). The physically Treated female/male checks seems to be used interchangeably with the Treated & Bimbo/Bro checks with a few scenes, so I doubt the physical check is being used exclusively for physical purposes. Because these functions are being used differently than originally intended, I think the physical checks have been depreciated and are used solely for the mental markers of being Treated instead, but only the developers can clarify on that point due to the the Treatment still being a very work-in-progress thing.
