Not sure what you mean. Google Photos is the default on every smartphone I've ever owned and this setting has been on by default as long as it has existed. You could just as easily say "Using Apple Photos was your own choice" and get shouted down.
The point is that outrage isn't automatic. Not everyone is going to be equally mad about a check box.
People aren't complaining that Apple Photos is installed by default. They're complaining that it's sending data up to Apple by default. You have to explicitly opt in to Google Photos backing up your photos to the cloud. That setting is not on by default.
