I wanted to defend this upload, but it cannot be defended.
The last line of the commentary led me to the teacher's bilibili page, containing an almost useless 17-seconds-long 'making-of' (slideshow of appearing elements). I was hoping it would showcase the full process to ascertain and balance how much genned and how much assisted it is, but unfortunately it dips against the teacher's favour.

Has artifacts common in unpolished generations, namely:
＊Hands/Fingers issue (her left hand, the pinky finger joint is odd) (zoom at 300%)
＊Hair interactions (her left cheek has weird interaction with the hair) (zoom at 300%)
＊Eyes artifacts (her right eye has a rebel lone eyelash jutting out too much) (even normal zoom can see it)
＊Text broken (letters on her right side in the jacket are illegible) (normal zoom)
＊Physics issues (her right hand is holding the violin bow merely with the fingertips, does she have glue on them? effectively it's floating, plus where is the thumb?; also analyze the power lines at 300% zoom: they are supposed to be messy, but here it is black hole messy, in real life it is "orderly messy")

All in all, I am sorry for this mistake. I will proceed to produce a wiki for this teacher to warn future uploaders lest they risk deletions like here or post #8509893

Addendum: The bilibili video has the tag AI辅助 (AI-assisted), but as seen here it cannot be trusted because not all the thing visible are real