All i know IK used Benami to target other political parties and promised to banned it. He never mention the good use or misuse of it.
For example IK says he wont allow politicians to do business. Now in future if IK is found to be involved in business what will you say? He paid tax? his bussiness profited country? All this will be ir-relevant. The only relevant thing will be he attacked politicians for the same thing he did