For Hakeem he is not self voting his own comment alone but also voting his alt spam accounts as I have pointed out. Meanwhile he's also on HiveWatcher blacklist. These account are suspicious, you can see at a glance.
Self voting every comment is a great abuse by the so called Hakeem! It won't save the economy which mean he doesn't care about it if you continue to allow this. Imagine every user doing the shits he's doing!!!