I can confirm those findings through my own experience, though I’ve never lost big toe nor little toe from running
I dropped a plate while putting the dishes away in the cabinet over the kitchen counter
I stuck my foot out to keep it from hitting the floor full force and breaking. Since It was Summertime, I had no shoes on. The plate fell straight down, with the edge hitting my big toe like a very dull guillotine, and harmlessly rolling away
It wasn’t long before a bruise began to form, starting right below the cuticle, but never quite reaching the opposite end of the nail
Then came the dark red blood blister; which - after a couple of weeks - came undone at one edge/ corner, and “drained” itself 
The rest of the Summer was “Is today the day it comes off?”
Interestingly, as weeks went by, the nail came undone from the back before the front, so it kinda hinged forward like …
… Before I finally got under it and yanked it off
I broke my pinkie toe at a water park in Palm Springs
The concrete on the pool deck was that superfine kind that gets extra-slick when wet. A little brat - who probably should have know better - came running toward me to get into the wave pool. As I turned to avoid him, my foot skidded into a joint in the concrete that was about half an inch off flush. By the end of the day, it had turned black & blue and swelled to approx. egg-size. I iced it down with a bag of frozen peas when I got home. I spent the next day hobbling around Disneyland.
I went to an orthopod when we got back to NJ and he basically said, “Yep, it’s broken but we can’t really do anything since it’s the little toe. Just ride it out.”
The nail has never grown right since