I'm with you. Bula, I was just curious as to what GA Driver was trying to get at. At least in our company speed brake use is the FCOM method for handling an overspeed.
As Keg suggests, the key here is also all the things that lead up to the overspeed, threat/error management etc. That's harder to teach I guess than an FCOM procedure, certainly, it takes more time, and with a bit of time you get to observe such things on the line with an experienced pilot alongside you. If you are unlucky it happens on day 1, when the Captain has gone to the loo.(I have no idea what the situation or experience levels were on this incident)
I'm lucky I have 8 years and counting of observation on the magical mystery bus so far :-) and I'm still learning