Everybody knows that and nobody is claiming otherwise (absent folks like Miculek who are so far past normal human capacity as to be irrelevant to this sort of discussion).
Equally, everyone knows it's slower to reload a small single stack pistol then it is a duty sized double stack. The question is, is that difference relevant? I suggest for someone carrying due to concerns of random violence, it isn't. Literally decades of NYPD SOP gunfight studies found speed of reload never once mattered in the outcome of their gunfights, and that was for a large police force carrying revolvers for much of the time. You can, of course, scour the nation and find a few examples over multiple decades were reload speed came into play. Even in those you can argue that tactics played in. A 1 second vs a 3 second reload just isn't that important in anything but the most remote outliers in real world defensive encounters.
In more stark terms, I've seen more dead people who shot themselves in the groin with a semi-auto then I've seen with an empty revolver in their hand.