that's quite amusing suggestion considering Greenify is closed sourced Chinese root app which optionally (only?) report data back to mainland China and dev worked for some companies producing shady apps, before according his LinkedIn profile
I am not saying he is actualy sending some other data without permission of user, but being closed sourced Chinese ROOT app is more than enough to stay away from it in days of Nougat/Marshmallow making this app pretty much useless anyway.