I think the majority of criticism here centers around Bethenny endlessly talking about Dennis as though he thought she was the love of his life and he was so devoted to her daughter. Public talk like that is inappropriate given his ex-wife/mother of his kids and his children will likely hear about it. If you're a decent human being, you just don't do that. It's insensitive and, frankly, rude. It's especially egregious when it's getting clearer by the minute her relationship with Dennis was nothing close to committed.
One of Bethenny's biggest flaws is that she speaks first, thinks later. She spits stuff out in the moment, then has to backpedal when she's caught lying or contradicting herself. She routinely embellishes if not manufactures narratives and is never held accountable for any of it. Watching her hijack the entire reunion while Andy sat there and never once stepped in shows just how afraid of her people are. And they're not afraid if her power or influence, as she doesn't really have any. They're intimidated by her lack of a conscience, volatility and reach. Look what she does. If someone crosses her, she goes on a TV show and says they're on drugs. She accuses them of abuse. She accuses them of torturing her. True or not, she doesn't care and she knows nobody will stand up to her, including Andy Cohen. While I don't think B. has any dirt on Cohen, I think Cohen has skeletons in his closet he doesn't want dragged into the light.
It's gone beyond the sassy smart mouth Skinny Girl mogul. It's not funny or endearing anymore. She's. fucking. crazy.