[Jack_]

Ranting on and on meaning other people can't talk -> people getting pissed off at not being given chance to speak -> bad feelings -> more feuds/drama -> more talking points -> more reasons for viewers to tune in/social media discussion -> better for the show

It's cyclical

I would hate to live with her and I see what you're saying, but in the context of the show this is a good thing. Anything housemates do that are annoying they should continue to do for the benefit of storylines