Nobody likes corrupt people. Not even the corrupt ones themselves.
But everyone has weaknesses.
And exploiting a weakness in someone could be the first step to corruption.
Offer them something to solve a serious problem, and they will forever be indebted, leaving open the possibility of crossing a line as a favour.
But there exists only one person who is incorruptible. The one who is a jnani. The one who wants only mukti and nothing else.