I found this aphorism in my book of Korean aphorisms.
소경이 넘어지면 막대 탓 한다
so.gyeong.i neom.eo.ji.myeon mak.dae tas han.da
blind-person-SUBJ stumble-COND stick fault make-PRES
If a blind person stumbles, it’s the stick’s fault.
This is just to say, you’re not blaming the right person. I think it’s pretty similar to “Bite the hand that feeds you.”