I'd say it's fine. Most RPG gamers will think of PoE = Pillars of Eternity and not that other hack'n'slay clickfest crap game that isn't even a RPG .
Like it or not, when someone says PoE, most think Path of Exile, "RPG gamer" or not.
Well, we could call it the Pillars of Josh Sawyer.
Why do people not like this guy anyway? Last time I checked, they were pretty damn riled up about him at Codex for something. It happens there, from time to time.
The title becomes too long, so we have to shorten it. We could think of another abbreviation like PofE.
PoE means Pillars of Eternity to me. That said, It definitely can get confusing. I know I've clicked on a few Path of Exile links thinking they were about Pillars.