This scammer just gave an ultimate proof what he is all about - lies, bullshit and scams. Of course the lending bot on github https://github.com/Mikadily/poloniexlendingbot is incomparably better, has a team of developers and is well documented, but most of all there is no "messing with API keys" whatsoever and there is absolutely no need to "trust the source". Such a blatant lie, in fact totally nonsensical, can be only said knowingly, intentionally and willfully by a pure scammer. Or a real retard. Or both.