Her low quality is one thing but im pretty sure many of these are screenshots or terrible re compressions.
I am comparing her evelyn set i bought (the non topless) and its just worse. Sadly i dont have all the others to compare but im willing to bet there is a similar issue
The JPEG compression was moved down to around 85% and the size was cut down from 1.3mb to 300ish kb.
and in the case of YSG or the Aglea (sorry i cant spell these anime names) the pics look outright blurry even without zoom. (like they were upscaled/denoised with AI)
Anyways its just a shame