It's so sad that people really are worrying about GPR when there are a thousand more important things to worry about.
It's not like the sites mentioned are even that important in the grand scale of things.
GPR is only useful for marketing purposes and, has already been mentioned, is not even as important as it used to be.
When are people going to move on from 'gotta be number 1 on google' and concentrate on optimising their sites for humans, not machines.