Given the statement below from the PA44 POH, it seems to me that CASA's position is consistent with the overall intent of Piper's advice to pilots:
WARNING
Under some conditions of loading and density altitude a go-around may be impossible, and in any event the sudden application of power during one engine inoperative operation makes control of the airplane more difficult.
ONE ENGINE INOPERATIVE GO-AROUND
NOTE A one engine inoperative go-around should be avoided if at all possible.