What's misleading about labeling the game single player, tweeting "To be clear, this is not a multiplayer game, don't go in expecting that", selling it with the label "single player" on all storefronts, and then *maybe* there being a minor feature that involves other players?
I get that people want answers, but I also get that it's clearly Sean Murray's intention to not give them about things he wanted to be mysterious. I don't see a problem with that, because I feel like they answered the important questions (is it a multiplayer game? No.)
If the game was being sold on the premise that it has multiplayer, I'd agree with you. But it is not being sold on that premise.