I tend to think of this regarding the PP.
Yes CK is elite in front of the net. However, I also come back to what happens when the PP struggles. PKs try to prevent Zib/Panarin from carrying the puck over the blueline. Dish it to CK at the blueline, usually results in a turnover. Dump it, CK can't dig it out of the corner.
If you replaced CK with a player like Laf sure you get less of CK tip goals, but what you get in return is a player the helps massively with zone entries and getting set up, a player that can go into the corners and retrieve the puck, Zib shoots more instead of trying set set up CK tap ins.
CK is great at one thing, but relying on that one thing detracts from other areas success can be found.