It's not the 60s and 70s....we can't shoot people just to effectuate an arrest anymore.
While a police officer shooting someone can legally be framed as a seizure, in actual practice an officer is almost always shooting solely to prevent the imminent loss of their life, or that of someone else. Detention isn't the driving goal at that point......not dying is my goal. If I get into a shooting and they get away, and I'm alive, that's not a loss.
(skip to 2:45)
I think we understand the point, and it's not the first time most of here have had that idea presented.
Truth be told, most police shootings would still work out okay if we were armed with Colt 1903s or Walther PPs, too. The difference is that as a profession we've tried to plan for the worst case scenario and mitigate deficiencies that we can control; one of those being terminal ballistics performance. We don't have a practice of relying on hope (i.e. psychological stop, which we can't control or predict), and then finding justifications for objectively inferior practices.
When I carry a 380, I don't carry it and pick a justification to make me feel better about my choice where I can predict that shootings will only go one way (in my favor) if it happens. I carry it because I'm not willing to put up with being burdened with a handgun of greater capability at that specific time, and I'm cognizant that my choice in doing so is based around comfort instead of capability. My choice to carry a lesser gun doesn't change the reality of what objective standards that gun needs to perform to during a shooting; this is a very common logical fallacy on gun forums.