As Myuinny mentioned, the poll is open to everyone. I really wanted to get input from everyone who's playing the game, not just the ones paying for it. Polls about extra content for the game will always be exclusive to my patrons though.
As for the twist at the end of the last update, I don't think you have to worry. I know it got a bit dramatic, but that's not the tone I want to keep for the rest of the story.
Spoiler for version 0.7
Spoiler for future updates (if your still worried about the end of version 0.7). Don't read this if you don't want to know anything about what's going to happen (the spoilers are pretty minor though).