Indeed! There is a fine line between a legitimate complaint that a spoiler has been posted and spoilerphobic whinging about non spoilers. That's why I think the best way to deal with an arguably spoilerish post is to report it to the moderators and let them decide the issue. That way the thread is not spoiled by somebody posting a "Gotcha!" claiming that another poster had somehow posted a spoiler, which turns out not to be a spoiler for most of us.
By the way Hamlet's mother drank a cup of poisoned wine that Hamlet's stepfather, the king, had intended for Hamlet. Nyah, nyah, nyah!