Good point, but I do not have Opera set as my default browser. I still have I.E. set as my default browser in the Windows OS, though I rarely use I.E. for web browsing.
And as I said, it is a workaround.
That's the way I have Opera/IE set on one of my computers, as well. My point was also addressed to those readers that "come later" to the thread... they need to be aware of the limitations/risks of the shortcut method if they truly want to block any possibility of an unintended Opera update.