Yes man, you are right, however there are a few mechanisms in place.
Leeches abound, I'm in a protracted battle with someone ripping off content from a site.
Report them here https://steemit.chat/channel/steemitabuse
Or here Steemcleaners Drop link
I'm not surprised that someone is self-voting themselves.
Self vote when you have a good Proof of work (a post) I find ok, i do it, i'm lucky when one of my posts gets noticed, most of the times i get only the few cents from my vote.
All this does is disincentivize people who actually put effort into the content they post.
This is what is worrysome for those that have used real money to make the platform grow (I'm one of those idiots).
And the abuse of posting 88 DOTS (like a 100 since he continues since this post) and self serving 1,6$ for a DOT a (.)
.
^^
I'm worth 1.64$ ?