You are missing the part where they announcement they were dead and sundelly put a seanky post that get half the users vote.
This could all be solves If this post had been set to reject the reward. They would get the visibility without the bad publicou.
In that announcement, they gave notice that a) service could continue if a successor was found, and b) users were still able to revoke the authority you gave them to post on your behalf:
-from Shutdown of Streemian.com
Again, if you didn't change your voting weight or revoke authorization, then you gave tacit consent for this to happen.
Of course it could have been avoided had they rejected the reward. It also could have been avoided if users chose to practice due diligence and educate themselves on a service they chose to use.