Why was Wicksell accused of lack of originality?

Given the originality of mind that was one of Wicksell’s hallmarks, and given our findings in Chapter 8, there is an inevitable question that must be raised: Why has Wicksell been accused of not producing anything very original when it comes to poverty, population, and emigration? (The only exception made is his writings on the concept of optimal population, but this, as we know, he never really developed.) The only possible answers to our question are conjectural but, even so, it may be worthwhile to speculate on the issue.