It''s not about who's "fault" it is, nor is there a definitive reason why we've won one game in ten. Football isn't as simple as that, just some people who watch it are. There is a collection of events, luck, beachballs, missed chances, good play by the opposition, poor play by us, individual awfulness etc etc etc etc which all come together to make a result in a football match.
Now, those of us who are saying Kuyt has been poor this season, and recently awful aren't blaming the fact we are failing to win football matches solely at his door, that would be silly. What we are saying though, is his presence on the right side of midfield in his current form is a major contributary factor to our lack of fluency. As I've said a couple of times, if you can't see that you are either clueless or looking through the rosiest of tinted spectacles. I've also said a couple of times that bizarrely he's probably still our best option out there, which says it all about the squad really.