This guy is pulling facts out of his own ass.
http://detail.chiebukuro.yahoo.co.jp...il/q1378171153
元々うみねこはDVD・BDの売り上げが壊滅的だったので。
From the start the DVD and BD sales of Umineko were
catastrophic.
This is definitely
not a myth of the western fans only.
More proofs
http://sakuhindb.com/janime/7_Uminek...u_20Koro_20ni/
This site shows a lot of data about the anime and its receptions. The pie menu on the left side shows that the general reception of this anime is horrible, with the peak votes going to worst possible judgement.