Dear GMS,
You best sum up in my view the notion, " with friends like these who needs enemies. ". Firstly both CSM and PS cannot be held to academic standards for research papers and citations. CSM had shared Donald Lows thoughts on his Facebook, by nature Facebook is informal chatty and is build around the notion of networking, sharing and discussion. Whether one as an individual cites or not is really an informal matter and if every Facebook comment is cited with the same academic certainty as a research paper, it really defeats the informal chatty coffe shop nature of Facebook.
PS should have replied better to DPM catching him out on that issue or for that matter adopted or adapted it in a different manner,
As it stands parliamentary speeches being short and time limited do not allow the brevity or breathe for full fledged citations of sources. Political speeches and public speeches in citations of quotes or extracts tend to be of well known academics, politicians and or personalities. Political speeches are not an academic exercise in research and citations and are not held to academic ideas of citations and riguer. Use of open source extracts are at best an issue of courtesy and clarification post speech.
Locke