Meh, do what you want. Personally I think it's too soon and the warning is too vague.
I respect your opinion, but at the same time respectfully disagree with it. If it says "Spoilers", then only two games that could apply to are Lords of Shadow and Harmony of Despair, they being the latest-released titles (maaaaaaybe Castlevania Adventure Rebirth). I think the addition of "Spoiler" to the title of the poll is more than appropriate.
It's not about what the community and what I want are, it's about what's fair. I don't think it's fair to chastise the thread creator for 'not being concrete enough' on the spoiler. The fact that he even put "Spoilers" is already warranting merit. At least he was considerate enough to put that there.