Modric THFC
Jimmy McCormick
I don't think that opinion holds when @Pirate55 is cherry picking in that way. He's restricting this to only goals that are scored directly from a set piece or where the next touch is s goal.
So we could have scored 0 under his definition, but 20 from situations just after set pieces. Other teams could have scored 10 directly under his method of counting but 0 in the touches shortly after. In which case, trying to emulate those other teams would lessen our chances of scoring.
In fairness to him. I seem to remember on the many "Crossing is useless" threads people doing the same thing, posting studies that counted goals from crosses only if they were directly from the cross or the next touch.