While I agree training is very important, I disagree that discussing what the best tool for the job is a false sense of security. The firearm is is a tool. Discussing what tool is best for the job is part of training as is discussing their strengths and weaknesses.
It would be like telling an aviation sheetmetal mechanic there is no good to discuss what riviting tool is best for the job at hand- rivit gun, ball pein hammer, bucking bar or rivit squeeze and that it is no good to discuss what rivit gun, hammer, bucking bar or squeeze works best because it will lead to a false sense of security.
What tool to use under what circumstances and what tools can be adapted to different situations is very important to know. Once the job is done, it's natural to want to know what tools & techniques the mechanic used & why and to assume that since the job was well done, the mechanic had the right training
While I can understand your argument and normally wouldn't have any problems when dealing with other tools, but if we look at your example, when you listed "ball peen hammer" - I noticed that you didn't bother to specify a certain brand of ball-peen?
Your own example generalizes the use of a tool down by function, and not by brand. -And your examples of "rivit gun, hammer, bucking bar or squeeze", would realistically be more in line with listing out "gun", knife, baseball bat..." rather than 4 specific brands of firearms.
With firearms on the internet, I have only seen people get caught-up in what "brand of gun", "what caliber is best", "what ammo is best" kind of distractions. Like I posted before, people are lazy and tend to gravitate to simple answers like believing certain guns will solve their SD/HD problems. They rarely, if ever, include personal responsibility of mental preparation and training in these discussions. Why take personal responsibility when you can buy the guns that Navy SEALs use and stoke it with SuperDuperMagicKillin' bullets?
I think the focus shouldn't get derailed like that. For me, what is interesting and worth learning is that both parents had the situational awareness to know a threat was coming, then had the mental clarity and determination to arm themselves and take immediate steps to protect their daughter from multiple armed intruders. I don't know if I would have responded as quickly.
This is obviously something they have planned and practiced. I would bet money that they would have responded in the same way had they only had .22lr pistols, leverguns, bolt-action rifles, or just baseball bats. For that, I salute their preparedness and willingness to not be victims. It was their actions and determination to survive that saved the day, it did not depend on what type of guns were in their hands.