I get the whole idea, but how realistic is it... Maybe if you live in an area with high crime. But even if you do, what are the chances of not only firing your pistol, but having to reload it? It's the 0.001% chance of being in that situation that has redefined carry essentials. I watched the new TFB video about the Glock 43 vs. 43X vs. 48 and they say having a grip that's .75" longer is no big deal because it offers much more ammo capacity.
I think being able to conceal it in the first place is where you should start, not with capacity.
With lots of videos where Navy Seals give you their opinion on EDC items and how many mags you should stow in your belt, I think it has led many people thinking you need to be prepared for 10 guys trying to kill you like we are living in a John Wick movie.