Then that is fine for you, ckuan. Your method ensures, that all photos will be showing the same location name.
My problem is, that Apple's location database is very sparse in the countries where I like to travel, and I prefer to copy the coordinates of the location, not the name of the closest city, point of interest, or ocean.
I tested again - copying the name of the place and pasting it into the location field for another photo will result in different latitude and longitude values.
For example: Photos has been showing the places name "Tanatoraja - South Sulawesi".
The GPS coordinates of this photo have been -2.9037° S and 119.8967° E
I copied and pasted the location name into the location field of a different photo and the other photo now has a latitude of -3.092827°S and 119.8541469°E. That is eleven nautical miles (or 21 km) farther south than the coordinates I pasted. For me, that is less than satisfactory.
