Maybe he's trying to botnet Axiom into a few cheap BTCs?
Maybe - but people do have a choice of visiting the site or not visiting it (though earlier things were more opt-in-y.. i.e. "press button here to start mining bitcoin")... you'd have to serve the code up maliciously, to a lot of people (e.g. via an ad distribution platform), to form any reasonably-sized botnet (and somehow get the code to stick even if the user leaves the page); and even then it's so ridiculously little that they'd be better off trolling faucets.
