Have tried to report his Github account again with reference to this thread, I hope what is done is right to eradicate fake github accounts.
Sometimes it takes a bit and a long time for getting the Accounts on Github banned but Github will be doing it at some stage.
From my experience from the past it depends who from the support will be on it.
There was a time an year ago where they deleted the Fake Github Accounts that i reported on Github in just a few days.
Just keep reporting them and if more Users doing that the chances are bigger they delete that Fake Accounts.
Yes indeed reporting to Github takes a long time, recently I also received a message after reporting a fake github account and they said they were experiencing a high volume of complaints so it took a long time.
For me it really doesn't matter the most important thing is to report and hope it will be faster when more people report.