Well, that was a useful discussion and I learned from it. As I said at the outset, we didn't know enough about the case from the original report as posted here, and now we know a little more.
I still don't buy the idea that the guy didn't become a more efficient killing machine with his new acquisitions. He tripled his handgun arsenal. He doubled his long-gun arsenal. As far as I can see, the semi-automatic rifle probably fires more rounds without re-loading than the shotgun, although we don't seem to have any relevant specs for either one of them, and the semi-automatic hand-gun magazines carry more rounds than the speed-loaders if the guy's old revolver was a typical 6-rounds capacity. Furthermore, the handgun magazines are more compact and less bulky than speed-loaders and look like faster re-loads. Press button, old clip drops out, new clip in, lock and you're ready for business. Speed loader looks like more steps, unlock, shake out cylinder, remove shell casings, insert speed loader, flip cylinder back in place, lock and shoot. Fuck dat. Obviously faster re-loads with the semi-automatic.
And we still don't know what the guy said or did to earn the description "very disgruntled." But of course the police did.
Prince's idea that the cops "talk to" the man to find out more before deploying is kind of disingenuous. "Sure, officer, come on over. Do you fellas prefer tea or coffee?" does not exactly provide the assurance one needs when one's life is at stake. The SWAT team dropped in with the usual precautions, no shots were fired into the guy's home (indicating that SWAT teams are capable of a lot more self-restraint than Prince would like to give them credit for - - Prince seems to see a visit by the SWAT team as synonymous with calling down a napalm strike on the guy's home; maybe he's been watching too many late-night movies) - - they were doing exactly what Prince suggested they do - - talk to the guy and investigate. Only, given what they already knew of the guy, they did it their way, so that nobody got hurt trying to talk and investigate. Better safe than sorry.
The OPP Constable recently killed in Ontario approaching a very disgruntled armed citizen did not realize at the time that he was armed and disgruntled, but if he had, he presumably would not have followed the Prince protocol for approaching the armed and disgruntled, and he'd still be alive today.