Of course it's real, and legit. The numbers are consistent with every poll we run, it hasn't been hijacked.
It was within a thread asking about a number of potential Everton managers on 2nd June - when Moyes was a concern. You can click through and see all the polls here;
This was from 10th, when 53% said swerve;
This from 2019, too;
The invisible thing here is how far away from the 50-50 line most fans are. A binary poll can't quantify where the average sentiment lies.
It's not even that he's incredibly polarising - because no one is effusively enthusiastic about the thought of his appointment.
Most people who vote thumbs up will be just-about thumbs up. Whereas most people that vote thumbs-down will be massively thumbs-down.