I don’t think it’s the same thing. It looks like that user is watching the site reload the entire list, and inaccurately at that (they’re looking at all by new but seeing days old posts in between minutes old ones?). What’s happening to me is that if I just sit at the top of the page I can watch as new posts come in live, one at a time. Which sounds cool in theory, but really hurts the browsing experience!
At least with Reddit it’s easily detectable (in theory, assuming anyone cared) without putting in the extra effort of IP masking. Here it seems like it’d be impossible to counter even if it were done by a complete layman. If someone has just one account on 5+ different instances they could make a huge difference by voting on their own posts without ever being detected.
Honestly, now that I think about it, it’s probably already happening to great effect considering how few people there are voting.
But yeah, oh well. Hopefully something works out.