if you just google 'Pretty Ugly Little Liar archive' there's a (partial) archive of the site, plus some other sections preserved on archive.org. browsing by URL prefix is the easiest way to see which pages of a given thread are available.
it's pretty entertaining as far as trash talk goes (the most bitter incels could not give you comments nastier than some of the shit said in those threads lmao) + from an internet history perspective and how short memory of this stuff is, it's interesting to read about these people as they were first establishing themselves.
iirc there wasn't really any "dirt" on hyoon, just people demonstrating that she heavily edited her pics and didn't resemble candid shots. some stuff on the yassuo saga as well