I went to sleep one night. I woke up the following day, and all I heard was "FLAPPY BIRD FLAPPY BIRD FLAPPY BIRDDDDD!"
the same thing happened to me. then nowadays when I want to browse the internet on my phone, atleast 15 people ask me if I have this game and I'm annoyed. i installed it to see why people liked it so much but the hitboxes (especially on Android) are just ridiculously scaled / positioned so it's quite hard for people like me with android devices. i uninstalled it afterwards.
I just don't get it! one day nobody was obsessed with it and the next it was a blazing fire. something's suspicious.