The whole "dying in threes" thing is basically an urban legend, but it's still super fun to explore. The idea is that when a famous person dies, it's like the universe needs to balance things out by taking two more. It's not like there's any real science behind it, but it's a cool way to look at the weird coincidences that pop up in the celebrity world.
Take Tim Curry, for example. The guy was a total legend in the entertainment industry, and his passing was met with an outpouring of tributes from fans and fellow celebs. And then, just a few days later, we lost another big name - it's like the universe was all, "oh, you think one legend is enough? Think again!"