There's a very sad background to that, it isn't (I don't think) a Forest/d*rby thing.
Sharp and his partner very tragically lost a son, Luey Jacob, born with gastroschisis, who died at two days old in 2011. Amongst a range of disgusting abuse he suffered as a result of it, a 'fan' was given a lifetime ban by d*rby for abusive trolling of him regarding the death of his son, in 2017.
d*rby fans regularly give him stick.
What a world.
I remember reading about that sad incident. I didn't realise d*rby fans had been so unpleasant to him.