It's always good to have more code examples, but BOT's typically work until the last few seconds to get the best results possible, I know this from the days I used Battle Helpers and also watching XBOT in action for Wild matches.
How do these accounts fare when it comes to winning, that could be factored in?
Sure, more analytics than just the one I provide here has to be included if we want to determine if the behaviour is human or not.
What I'm sceptical about in the example I provided here is the stamina to keep playing so many accounts so fast for a long time. The guy plays almost 12 hours in one go in the latest session (small break in the middle there), with 6 accounts at a time. But perhaps there are people who will do this.
That said, the purpose of this post was just to provide a tool to the community, not to pursue this player in particular :)
Now that's a different thing, and it sounds ropey. Do the accounts win a large percentage of the games?
Not really, the win rate on average for these accounts was just below 50% (47.3%), so that's not suspicious.