Just a guess, but the threshold for removing something based on users flagging it might be pretty low. I also wonder if it could vary based on the product type

Just a guess, but the threshold for removing something based on users flagging it might be pretty low. I also wonder if it could vary based on the product type. Another commenter wondered about the possibility of liability if someone sold a mattress that had bed bugs; it would make sense that certain types of products would have a lower threshold for flagging than others (eg: who is going to flag a 50mm f/1.4G Nikon lens as being a possible issue?).