I can't stress how bad an idea it is to use this for passport photos.
Passports are likely the strictest, most important ID that most people will ever own. The reason the photos have strict requirements is to ensure that the ID can be effective. Putting a photo of not you on your passport is such a huge self-own.
It's also not just about whether your passport authority accepts the photo, it's about whether every single border you cross accepts it, and crossing a border in a country you aren't a citizen of is about the worst place to have your ID questioned.
Passports are likely the strictest, most important ID that most people will ever own. The reason the photos have strict requirements is to ensure that the ID can be effective. Putting a photo of not you on your passport is such a huge self-own.
It's also not just about whether your passport authority accepts the photo, it's about whether every single border you cross accepts it, and crossing a border in a country you aren't a citizen of is about the worst place to have your ID questioned.