Nobody anywhere is suggesting that non OEM products don't have a place in the market. Plenty of people buy them. However, if one is concerned about a product that appears faulty and is likely to impact on their professional photography income it would surely be sensible to pay extra for a product that has little or no recorded problems, has full backup from the national distributor under warranty and at the end of the day offers a measure of guarantee to get the job done correctly.
In this case we are talking about a hideously expensive battery grip but in reality reaction, don't you think that the added expense may have meant that it wouldn't compromise your professional photography business?