I thought the same thing, but I doubled checked, it is on the Stax @silvergoldbotty account. Not a Stax upvote on the @phelimint account. Maybe U knew that...
As far as the Self Votes, it pays the bot account back, as does the Vote Trades w/Qurator. The numbers seem to be correct, and we can check the outgoing wallet. If we stop these vote trades and selfies, it costs us all almost $1 per vote in the long run. At gold level. I showed some graphs up above, were are netting $6 gains every time we trade votes w/Qurator