I’m not saying the email format alone means they were fake.
I’m saying that they were fake because all of them were formatted like that, registering within hours of being made available on the Play Store/AdWords, with zero external links and the app never actually being launched.
The odds are almost nil that they were legitimate users. It’s incredibly easy to spot, the email signups after the initial launch are far more “natural”, even those sharing the same format.
That’s clearly not what the parent post is suggesting. E-mail addresses on this format don’t make up 100% of all e-mail addresses in existence, so it’s suspicious when they make up 100% of your signups.
That makes you fraudulent these days? Man, my wife and I are screwed.