She pretty much created her own bad reputation. Not just from this show, but it definitely cemented it. There was also a sex tape scandal, but I think it was wrong to slutshame someone for something like that even back then.
Her main reputation was always vapid, filthy rich, snotty socialite - she was hardly the first, but she might have been the first we got to watch in a seasons-long reality show.
Edited to add - if that stuff was all an intentional move to bring shame on her family for how they mistreated her growing up, I’m now her biggest cheerleader.