No, not a 'American custom', just the norm for the masses. Like saying Americans only have Velveeta cheese, ignoring the fact we have better cheese than Europe, or saying we only drink Coors light beer, ignoring the fact we have better micro breweries than Europe will ever have.Really, eggs are pretty safe if the shell is intact. In Europe, they do not keep eggs in the fridge, that is an American custom. They just keep them in a bowl on the counter.
When I was a girl, one always opened store bought eggs into a cup, before adding them to whatever you are cooking. If you are nervous, you could do that. In cool spring temperatures, I would not worry about any eggs. In the heat of summer, if a nest was found that were a couple of days old, I would pitch.
No need to collect twice a day, except in winter when they freeze and split. Ugh!
There is a difference in the handling of eggs by commercial producers, according to thisNo, not a 'American custom', just the norm for the masses.