here we can see what changed.
https://github.com/usefree/poloniextermsofuse/commit/a6c548bccf6b8767505938081e0e56051a32cb24
Thanks to webarchive
A lot off interesting things appeared.
Seems like Poloniex is declaring that any fail is Your trouble, not the trouble of Poloniex. You may lose your funds here and here and if it happen - it is Your problem and not Poloniex's problem)