埋怨谁Who blame?

驴子非常缓慢地拉着石磨，他抱怨道：并不是说我很懒，但石磨的质量很差。 愚蠢和懒惰的人总是抱怨工具太糟糕了。

Donkey pulled the Stone mill very slowly, he complained: Not that I am lazy, but the Stone mill is of poor quality. Stupid and lazy people always complain that the tools are too bad.