I disagree that it's a total myth, I've seen it often enough to know it does happen (although it's less common with sexual abuse than with physical, verbal or psychological abuse). Even then when it is generational it's often the type that isn't overt sexual abuse in the traditional sense so much as the type that results from being raised with totally inappropriate or insufficient boundaries or the type that isn't necessarily inflicted directly onto a child but enables it (like they expose a kid to sexualized behavior, fail to dissuade them from mimicking it because they don't see the problem, then doing fuck all when it attracts actual diddlers and groomers because "well they are mature for their age". Times when a kid acts sexually inappropriate without understanding what they're doing because they learned stuff they shouldn't due to extreme lack of privacy in the household. Or women becoming bitter towards their daughters and pimping them out or otherwise allowing them to be humiliated or exploited because "she should appreciate the attention" or living through them vicariously and thinking they're doing them a favor because their own attitudes are so warped, which may or may not be a result of abuse).
Hopefully I'm getting across what I'm trying to say, which is that I do think sexual abuse can often be a self perpetuating cycle, but mostly because it can cause a warped sense of what is appropriate and thus often results in overlooking or enabling stuff that otherwise wouldn't be allowed to happen (whether to consider this outright participation is subjective and probably case by case anyway). The people who actually diddle kids know perfectly fucking well it's unacceptable (barring extremes like being raised in an incest cult or profound mental retardation) are just scum plain and simple, and the "well they're victims too uwu" is criminal lawyer cope that became pop psych bullshit, on that we do agree.
Kelly obviously has serious boundary issues and seems to be bitter and vindictive towards her own kids. Whether this is a result of being abused herself is her business, but she's spent enough time in therapy that her treatment of her daughters is not really excusable regardless. Hopefully if Kelly's treatment of her kids (namely failing at appropriate boundaries with regards to nudity or sexual behavior, priming them to accept unhealthy affection from whoever will give it, and blasting personal pics/info all over the internet to any groomer who might take advantage) leads to something fucked up happening the father will grow a pair and step in before it gets out of control.
These terminally-online woke deviants stop being funny in a hurry when you think too hard about the impacts on their children...

I might reread the posts about her getting ass blasted at her therapist, being hilariously racist through desperate unsolicited efforts to be seen as totally not racist, and thinking it's a disorder to deny yourself bedtime fried chicken to remind myself the funny outweighs the depressing.