When you state the number of times his stupidity cost us a goal or points then you are translating his stupidity to numbers and when you do that, these new calculated numbers will mean a lot, they will support your argument.
I mentioned he's a good defender and I presented to you how good he was last season. I supported my opinion with facts he has achieved.
Now you say that he's the worst footballer in history, fine. That's your opinion. Then you say that he has cost us goals and numbers, better. Why better? Because that claim can be proven. So I kindly ask you to show me how many goals and how many points was he behind (solely behind)