This is why fanbases here on this particular website of the actual player discussed should be the very last place people look to for player valuations.
How many of his pts come when he’s with Riedet and Chiasson as opposed to how many come when he’s slotted with Conner at ES or on the PP?
He’d be a 60-70 pt player tops without McDavid and is multiple tiers below a player like Hall.
That the bulk of his points come with McDavid isn't really the point though, it's that whenever he's apart from McDavid, he's playing with bottom 6 players. His points are inflated by McDavid half the time and then hurt by crap wingers the other half. He might be a 60-70 point player playing the whole year with crap players, but he's probably an 80 point player with actual competent top 6 wingers. He's not as good as Hall, but he's not levels behind. Hall has had some mediocre numbers in some years himself.
As for the poll, I don't know how it's not comparing Hall to Malkin. It's not like McDavid is a way better player to make up for it. It's clearly the Pens duo. Maybe it's the Oilers if you compare MVP Hall to Malkin in his worse year