User numbers in Pokémon Go did increase during the COVID-19 pandemic. Niantic adapted the gameplay to accommodate pandemic restrictions. These changes made the game accessible even while staying at home. And then as players looked for safe, outdoor activities to break up indoor routines, user numbers went up.
There’s nothing like “Gen Z” or “Gen X”. Stop this bullshit that’s not more grounded than astrology. There’s cultural development in society, but it’s not restricted to an age cohort.