Thing is, and this applies to more than just Kulu, you look at Newcastle, and Woolwich to a degree, and it's remarkable how much improvement a player can have, and how different they can look, when they're being well-managed and are in a team that has a collective competitiveness about it.
Kulu, Richarlison, Porro, Romero, Sonny, these guys look terrible, but they don't look as terrible as Joelinton and Almiron did in a circling-the-drain Newcastle team. They aren't as much of a disgrace to the shirt as Granit Xhaka often was.
The squad needs improvement for sure, but the club needs a raison d'etre above all.