i don't find that you can get the impression from a mass edit that someone has reviewed this. 
The way it's done only says something about the fact that tagging may have been made more precise here.
he has made it clear in the comment that he has merely replaced the old form of tagging with a new one. and this can also be done from a distance.
a renewed check for validity must nevertheless be carried out on site. 
What percentage of the changes are actually not correct?