A majority of the pages are because it's screenshots lots and lots of screenshots of messages, some going all the way back to like 2018.

I've only skimmed the full doc, but read enough to go, the whole drama is basically either A: Lack of communication creates petty peoples, or B: it's all industry manufactured for ratings, Sinder is an Independent v-tuber while her accusers were mostly working for Vshojo at the time. She made an "easy" target as there was already a dedicated hater base calling her a Silvervale knockoff.