True, but I fail to see why it's relevant. Every mention of generic here (at time of reading) is along the lines of "this pattern could be generalised if we had

True, but I fail to see why it's relevant. Every mention of generic here (at time of reading) is along the lines of "this pattern could be generalised if we had generics", which IMO is a fair point to make when discussing ways to make a repetitive design pattern less painful.