So on the second post linked above, he has given himself a $5.36 upvote while the Original Post is sitting at $0.38 and he has not voted on it.  He admits that he is just upvoting himself using his stake to get an ROI.  The statements he make there make it clear he either does not understand, or does not care about the reward pool and the potential harm to the long term value of Steem he is causing.  

"It is your Stake, use it as you see fit" is clear here.  He sees fit to upvote himself on every comment, @transisto sees fit to flag his comments underwater.  I have no problem with the flags whatsoever.  Protect the Reward Pool man!  

His powering down and leaving is a decision he needs to make of his own accord taking all things into consideration.  But weighing his statements, and the implication that he is only upvoting comments on his own posts rather than going out and curating make a clear case for someone who is out for Numero Uno, not the good of the platform, so "don't let the door hit you on the way out chief!"