I do get the point, given they were relegated under a different manager after he was sacked and it wasn't him that confirmed it, but they were only out of it because 2 of the teams below them had played fewer games, they'd lost 7 of the previous 10 games under Edwards but dropped in to the relegation zone again in the new manager's first game, despite a draw.
They picked up more points in fewer games after his sacking, they were one of the form sides in the division for the final 12 games, it just took Bloomfield a month to halt the slide.
I think it would be a bit like blaming Mowbray for relegating Blackburn in 2017, despite so much of the damage being done by the previous manager and him nearly keeping them up.
Or letting Woodgate off if we'd been relegated in 2020 because we weren't in the relegation zone when he was sacked, we only dropped in to it after Warnock's second game in charge.